Journal articles: 'Tellurite-based glass'

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Oo, Hooi Ming, Halimah Mohamed-Kamari, and Wan Mohd Daud Wan-Yusoff. "Optical Properties of Bismuth Tellurite Based Glass." International Journal of Molecular Sciences 13, no. 4 (April 11, 2012): 4623–31. http://dx.doi.org/10.3390/ijms13044623.

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Hong, Tran Thi, Phan Tien Dung, and Vu Xuan Quang. "Luminescence studies of Eu3+ ions in tellurite glass ceramics." International Journal of Modern Physics B 33, no. 17 (July 10, 2019): 1950179. http://dx.doi.org/10.1142/s0217979219501790.

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The optical properties of Eu[Formula: see text] ions in tellurite glass ceramics with the chemical composition 50TeO2–29B2O3–10ZnO–10Na2O–1Eu2O3-based precursor glasses were presented. These precursor glasses have been prepared by melt quenching method in air, followed by thermal annealing at 550[Formula: see text]C for 12 h, 24 h and 36 h. After thermal annealing process, the micro–crystals appeared in host tellurite glasses. Judd–Ofelt (JO) parameters were calculated from the photoluminescence (PL) spectral measurements. The [Formula: see text], [Formula: see text] and [Formula: see text] parameters have been used to estimate the radiative properties of Eu[Formula: see text] ions in tellurite glass ceramics such as transition probabilities, branching ratio, radiative lifetimes and stimulated emission cross-section. The results of tellurite glass ceramic have been discussed and compared with the similar studies.

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Wei, Ning, Xiaobo Li, Jiajing He, Yongtao Fan, Yaping Dan, and Jun Wang. "Design of an optical slot waveguide amplifier based on Er3+-doped tellurite glass." Chinese Optics Letters 21, no. 1 (2023): 011404. http://dx.doi.org/10.3788/col202321.011404.

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Zheng, Binbin, Mingxiao Zhao, Qiangbing Guo, Yongze Yu, Shichao Lu, Xiaoshun Jiang, and Shifeng Zhou. "A chip-based microcavity derived from multi-component tellurite glass." Journal of Materials Chemistry C 3, no. 20 (2015): 5141–44. http://dx.doi.org/10.1039/c5tc00734h.

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Gayathri Pavani, P., R. Vijaya Kumar, and V. Chandra Mouli. "Characterization of ZnO based boro tellurite glass system." Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B 57, no. 2 (February 29, 2016): 104–10. http://dx.doi.org/10.13036/17533562.57.2.013.

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Sidek, H. A. A., S. Rosmawati, B. Z. Azmi, and A. H. Shaari. "Effect of ZnO on the Thermal Properties of Tellurite Glass." Advances in Condensed Matter Physics 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/783207.

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Systematic series of binary zinc tellurite glasses in the form(ZnO)x(TeO2)(wherex=0to 0.4 with an interval of 0.05 mole fraction) have been successfully prepared via conventional melt cast-quenching technique. Their density was determined by Archimedes method with acetone as buoyant liquid. The thermal expansion coefficient of each zinc tellurite glasses was measured using L75D1250 dilatometer, while their glass transition temperature (Tg) was determined by the SETARAM Labsys DTA/6 differential thermogravimetric analysis at a heating rate of 20 K min−1. The acoustic Debye temperature and the softening temperature (Ts) were estimated based on the longitudinal (VL) and shear ultrasonic (Vs) wave velocities propagated in each glass sample. For ultrasonic velocity measurement of the glass sample, MATEC MBS 8000 Ultrasonic Data Acquisition System was used. All measurements were taken at 10 MHz frequency and at room temperature. All the thermal properties of such binary tellurite glasses were measured as a function of ZnO composition. The composition dependence was discussed in terms of ZnO modifiers that were expected to change the thermal properties of tellurite glasses. Experimental results show their density, and the thermal expansion coefficient increases as more ZnO content is added to the tellurite glass network, while their glass transition, Debye temperature, and the softening temperature decrease due to a change in the coordination number (CN) of the network forming atoms and the destruction of the network structure brought about by the formation of some nonbridging oxygen (NBO) atoms.

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Jauhariyah, Mukhayyarotin Niswati Rodliyatul, Mita Anggaryani, and Ahmad Marzuki. "Research trend on erbium-doped tellurite glasses based on scopus database." E3S Web of Conferences 328 (2021): 04018. http://dx.doi.org/10.1051/e3sconf/202132804018.

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This paper aims to analyse the research trend of erbium-doped tellurite glasses. To this aim, this paper applied bibliometric analysis. The comprehensive research document on the topic of erbium-doped tellurite glasses in the Scopus database is 695 documents. The result revealed that scientific publication on erbium-doped tellurite glasses has been increasing. China contributed the most documents on erbium-doped tellurite glasses. The visualization of the research trend on erbium-doped tellurite glasses assisted with VOSviewer software and resulted in four primary clusters: (1) the red cluster show the keywords about the synthesized and fabrication, (2) the blue cluster show the keywords about the characterization, (3) the green cluster show the user or the application of the glass with each characteristic of materials, (4) the yellow cluster show the way to analyse energy based on the parameters owned by erbium-doped tellurite glasses. The research findings are the networking of the keywords on the research of erbium doped tellurite glasses in all clusters. It means that this research is comprehend knowledge and need to be more investigate to further research.

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Ghoshal, Sib Krishna, Azmirawahida Zainuddin, Ramli Arifin, M. R. Sahar, Md Supar Rohani, and Khaidzir Hamzah. "Samarium Concentration and Optical Correlation of Tellurite Glass." Advanced Materials Research 1107 (June 2015): 443–48. http://dx.doi.org/10.4028/www.scientific.net/amr.1107.443.

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Modifying the structural and optical properties of inorganic glasses via controlled doping of various rare earth ions by inhibiting the quenching effect is a challenging task. We report the influence of samarium (Sm3+) ions concentration on enhanced optical properties of tellurite glass. A series of glasses with composition (0.80-x)TeO2 + 0.10Li2O + 0.10 Na2O + xSm2O3, where 0.0<x <0.03 mol% are prepared using melt quenching method and optical characterizations are performed. The XRD spectra confirm the amorphous nature of the glass. The Urbach energy decreases and the optical gap for both direcet and indirect transitions increases with the increse of samerium contents. The UV-Vis spectra comprised of eight absorption bands and PL spectra reveal four prominet peaks corresponding to various transitions from the ground state to the excited states of Sm3+ ion. The optical response shows significant enhancement with increasing concentration of samerium ions. Our detail experimental analyses may be useful for the development of tellurite glass based photonic devices. Keywords: Tellurite Glass, Sm3+ ions, Urbach Energy, Direct and Indirect Transition.

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Muhammad Noorazlan, Azlan, Halimah Mohamed Kamari, Sharudin Omar Baki, and Daud W. Mohamad. "Green Emission of Tellurite Based Glass Containing Erbium Oxide Nanoparticles." Journal of Nanomaterials 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/952308.

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Investigation on green emission and spectral intensity of tellurite based glass containing erbium oxide NPs is one of the crucial issues. Tellurite based glass containing erbium oxide NPs with the composition of{[(TeO2)0.70(B2O3)0.30]0.7(ZnO)0.3}0.95(Er2O3)0.05has been prepared by using conventional melt-quenching method. The structural and optical properties of the glass sample were characterized by using XRD, FTIR, UV-Vis absorption, and PL spectroscopy. The amorphous structural arrangement was proved through XRD method. The formation of TeO3and BO3units was revealed by FTIR analysis. Five transition states of excitation were shown in UV-Vis spectra which arise from the ground state4I15/2to the excited states4G11/2+2H9/2+4F5/2+4F7/2+2H11/2+4S3/2+4F9/2+4I9/2+4I11/2. The intensity parametersΩt(t=2, 4, 6) are calculated and follow the trend ofΩ2>Ω4>Ω6. Broad green emission at 559 nm under 385 nm excitation was obtained.

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CAO Ye, 曹晔, 赵舜 ZHAO Shun, and 童峥嵘 TONG Zheng-rong. "Single-core PCF Splitter Based on ZnTe Tellurite Glass." ACTA PHOTONICA SINICA 44, no. 2 (2015): 206003. http://dx.doi.org/10.3788/gzxb20154402.0206003.

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Massera, Jonathan, Adam Haldeman, Jessica Jackson, Clara Rivero-Baleine, L. Petit, and Kathleen Richardson. "Processing of Tellurite-Based Glass with Low OH Content." Journal of the American Ceramic Society 94, no. 1 (September 3, 2010): 130–36. http://dx.doi.org/10.1111/j.1551-2916.2010.04031.x.

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Kim, Hyun Gyu, Takayuki Komatsu, Kazuhide Shioya, Kazumasa Matusita, Katsuhisa Tanaka, and Kazuyuki Hirao. "Transparent tellurite-based glass-ceramics with second harmonic generation." Journal of Non-Crystalline Solids 208, no. 3 (December 1996): 303–7. http://dx.doi.org/10.1016/s0022-3093(96)00518-2.

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Guery, Guillaume, Alexandre Fargues, Thierry Cardinal, Marc Dussauze, Frederic Adamietz, Vincent Rodriguez, John David Musgraves, Kathleen Richardson, and Philippe Thomas. "Impact of tellurite-based glass structure on Raman gain." Chemical Physics Letters 554 (December 2012): 123–27. http://dx.doi.org/10.1016/j.cplett.2012.10.023.

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14

Arifin, Ramli, S. Akmar Roslan, M. R. Sahar, S. K. Ghoshal, and K. Hamzah. "Thermal and Structural Properties of Erbium/Neodymium Co-Doped Lithium-Magnesium-Tellurite Glass." Advanced Materials Research 1107 (June 2015): 466–70. http://dx.doi.org/10.4028/www.scientific.net/amr.1107.466.

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Detailed characterizations of inorganic glasses via optimized rare earth doping/co-doping are challenging. Tellurite glasses with composition (78-x)TeO2-10Li2O-10MgO-2Nd2O3-xEr2O3, (where x = 0.4 to 2.0 mol%) are prepared by melt-quenching technique. The effects of Er2O3 concentration on the thermal stability and structural properties are examined. The X-ray diffraction pattern confirms the glassy nature of all samples. The temperature of glass transition (Tg), crystallization (Tc), melting (Tm) and the difference (Tc-Tg) are determined by differential thermal analyser (DTA). The values of Tc, Tg and Tm are found to vary in the range of 419-430 °C, 300-345 °C and 885-890 °C, respectively. The glass sample with 0.4 mol% Er2O3 shows highest thermal stability. The FTIR spectra measured in the range of 400 - 4000 cm1 exhibits two major absorption peaks around 1600 - 3600 cm1 and 900 - 1200 cm1 assigned to the stretching vibrational mode of OH and Te-OH respectively. Improvements in the optical and thermal properties due to co-doping may be useful for the development of tellurite glass based photonics.

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Anashkina, Elena A. "Laser Sources Based on Rare-Earth Ion Doped Tellurite Glass Fibers and Microspheres." Fibers 8, no. 5 (May 11, 2020): 30. http://dx.doi.org/10.3390/fib8050030.

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In recent years, huge progress has been made in the development of rare-earth ion doped tellurite glass laser sources, ranging from watt- and multiwatt-level fiber lasers to nanowatt level microsphere lasers. Significant success has been achieved in extending the spectral range of tellurite fiber lasers generating at wavelengths beyond 2 μm as well as in theoretical understanding. This review is aimed at discussing the state of the art of neodymium-, erbium-, thulium-, and holmium-doped tellurite glass fiber and microsphere lasers.

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Iwafuchi, N., S. Mizuno, Yasuhiko Benino, Takumi Fujiwara, Takayuki Komatsu, M. Koide, and K. Matsushita. "Nano-Crystallized Glass Fibers with Second-Order Optical Nonlinearity." Advanced Materials Research 11-12 (February 2006): 209–12. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.209.

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Transparent nano-crystallized glass fibers with 300μm diameter were successfully fabricated in tellurite (TeO2) based glass systems. Structure of crystallized glass fibers and orientation of nano-size crystals were quantitatively investigated by microscopic Raman spectroscopy and X-ray diffraction. Second harmonic generation was measured in the nano-crystallized optical fibers.

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Jauhariyah, Mukhayyarotin Niswati Rodliyatul, and Ahmad Marzuki. "Optical Properties of Erbium-Doped Tellurite Glasses: A Review and Bibliometric Study." MATEC Web of Conferences 372 (2022): 06006. http://dx.doi.org/10.1051/matecconf/202237206006.

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The aim of this paper is to review the optical properties of tellurite glasses doped by erbium and describe their bibliometric study about it. The research documents on of optical properties of tellurite glasses doped by erbium in the Scopus database are 115, start from 1999 until now. The visualization of the research assisted by VOSviewer software. There are three clusters: (1) red cluster for the optical properties begin from the fabrication process until the characterization of glasses based on the geometrical optics phenomena, (2) green cluster for the emission spectra until the analysis using McCumbers Theory, and (3) erbium-doped tellurite glasses optical properties based on energy transfer and XRD analysis on the blue cluster. Based on the Scopus documents, not too many researchers are concerned with researching erbium-doped tellurite glasses, never more than 12 documents per year. However, the researchers are consistent to explore further exploring the characteristics of the optical properties of glass exposed to erbium ion for laser applications.The research funding shows that the tellurite glasses doped by erbium are being developed for laser applications.

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Strutynski, Clément, Marianne Evrard, Antoine Le Gendre, Anthony Maldonado, Frédéric Désévédavy, Grégory Gadret, Jean-Charles Jules, and Frédéric Smektala. "Physicochemical Properties and Fiber-Drawing Ability of Tellurite Glasses in the TeO2-ZnO-Y2O3 Ternary System." Materials 15, no. 3 (February 3, 2022): 1177. http://dx.doi.org/10.3390/ma15031177.

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Glasses in the TeO2-ZnO-Y2O3 (TZY) ternary system are examined in the present work. The vitrification domain of the chosen oxide matrix is determined and differential scanning calorimetry as well as X-ray diffraction measurements are carried out. The material characterizations reveal that Y2O3 incorporation cannot exceed 5 mol.% without causing detrimental crystallization within the glass. Optical transmission and refractive index investigations are conducted on compositions yielding fully amorphous samples. Next, the fiber drawing ability of selected yttrium-containing zinc-tellurite glasses is assessed and fiber-attenuation measurements in the mid-infrared are presented. Finally, a multimode step-index fiber is fabricated by combining a TZY cladding glass with a La2O3-based tellurite core glass. It is believed that yttrium-containing glasses could prove useful in association with other high glass transition temperature (>300 °C) TeO2-based materials for the design of robust optical fibers with precisely engineered refractive index profiles.

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Anashkina, Elena A., Vitaly V. Dorofeev, and Alexey V. Andrianov. "In-Band Pumped Thulium-Doped Tellurite Glass Microsphere Laser." Applied Sciences 11, no. 12 (June 11, 2021): 5440. http://dx.doi.org/10.3390/app11125440.

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Microresonator-based lasers in the two-micron range are interesting for extensive applications. Tm3+ ions provide high gain; therefore, they are promising for laser generation in the two-micron range in various matrices. We developed a simple theoretical model to describe Tm-doped glass microlasers generating in the 1.9–2 μm range with in-band pump at 1.55 μm. Using this model, we calculated threshold pump powers, laser generation wavelengths and slope efficiencies for different parameters of Tm-doped tellurite glass microspheres such as diameters, Q-factors, and thulium ion concentration. In addition, we produced a 320-μm tellurite glass microsphere doped with thulium ions with a concentration of 5·1019 cm−3. We attained lasing at 1.9 μm experimentally in the produced sample with a Q-factor of 106 pumped by a C-band narrow line laser.

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Yongsiri, Ploypailin, and Kamonpan Pengpat. "Materials Characterization of Potassium Sodium Niobate based Tellurite Glass-Ceramics." Integrated Ferroelectrics 141, no. 1 (January 2013): 154–66. http://dx.doi.org/10.1080/10584587.2013.787778.

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Chen, Qiuling, Qiuhua Ma, Hui Wang, and Qiuping Chen. "Diamagnetic tellurite glass and fiber based magneto-optical current transducer." Applied Optics 54, no. 29 (October 6, 2015): 8664. http://dx.doi.org/10.1364/ao.54.008664.

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Chen, Qiuling, Hui Wang, Qingwei Wang, and Qiuping Chen. "Faraday rotation influence factors in tellurite-based glass and fibers." Applied Physics A 120, no. 3 (June 3, 2015): 1001–10. http://dx.doi.org/10.1007/s00339-015-9268-z.

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Azman, K., Yahya Norihan, H. Azhan, S. Akmal Syamsyir, and R. S. Nasuha. "Lasing Efficiency of Nd³⁺-Doped Lead Tellurite Glass." Solid State Phenomena 268 (October 2017): 186–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.268.186.

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Neodymium doped tellurite glass have been proven to be one of the most efficient candidates for photonic application. Nd3+ ions are well known excellent as lasing ions at 1.06μm. However, the efficiency of the lasing activity of the Nd3+ doped tellurite glass need for more discussion especially on the contribution of the atom-atom and atom-ligand bonding based on the Judd-Ofelt theory. Therefore, initiative has been taken in this work to determine the laser efficiency by mean of their oscillator strength and Judd-Ofelt parameters. In order to identify the optical behaviour, good quality of Nd doped tellurite glass should firstly be ready. From the results, it is found that the experimental and calculated oscillator strength results of the glass are found varies from 1.157 x 10-6 to 0.804 x 10-6 and from 2.527 x 10-6 to 2.243 x 10-6 respectively with respect to Nd2O3 composition. The small rms deviation ~10% indicates good fit between experimental and calculated oscillator strength. Meanwhile, the Judd-Ofelt intensity parameters with t = 2, 4 and 6 are found to vary with respect to mol% of Nd content. The 4F3/2→4I11/2 transition for 1.06μm emission which is useful for lasers and optical amplification is totally contributed from electric dipole whereas the magnetic dipole shows no effect. Some other results will be discussed in details.

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Saddeek, Yasser B., and N. Z. Elsayed. "Structural and mechanical features of some lanthanum tellurite glasses." Canadian Journal of Physics 93, no. 4 (April 2015): 460–65. http://dx.doi.org/10.1139/cjp-2014-0044.

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Tellurite-based glasses of the chemical formula xLa2O3-(100 – x) TeO2, (2.5 ≤ x ≤ 12.5 mol%) have been prepared and studied by FTIR spectroscopy and the ultrasonic technique. The FTIR analysis indicated that La2O3 transformed the TeO3 into TeO4 structural units in the range 2.5 ≤ x ≤ 5, while in the range 5 ≤ x ≤ 7.5 mol%; there is a coordination transformation of Te atoms in [TeO4] groups into [Formula: see text] groups associated with the formation of non-bridging oxygens. Beyond x = 7.5 mol%, the structural units [Formula: see text] (tp) were destroyed and transformed into TeO4 structural units that acted as a former and tightened the tellurite glass network more. The stretching force constant of the tellurite structural units was affected with the increase of La2O3 content. The structural variations of the structural units of TeO2 and La2O3 affected the increase of density, the behaviour of the ultrasonic velocities, the elastic moduli, and both of the optical and acoustical Debye temperature with increasing La2O3 content. The ratio of optical to acoustic Debye temperature represented the three-dimensional nature of tellurite-based glasses.

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Ghoshal, Sib Krishna, Masni Shafie@Haron, and M. R. Sahar. "Luminescence Features of Silver Nanoparticles Sensitized Samarium Doped Boro-Zinc Tellurite Glasses." Materials Science Forum 846 (March 2016): 96–101. http://dx.doi.org/10.4028/www.scientific.net/msf.846.96.

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Spectral features modification of rare earth (RE) doped tellurite glasses via controlled manipulation of metallic nanoparticles (NPs) is the current challenge in achieving enhanced lasing action. Triggering the localized surface plasmon resonance (SPR) of NPs in the glass generates tremendous applied interests especially in solid state lasers and nanophotonics. Despite several promising features of RE doped zinc-boro-tellurite glass, the low absorption and emission cross-section of RE ions prohibit them from fabricating efficient lasers. This drawback needed to overcome and significant enhancement of spectral features is required. Co-doping by rare earths and/or embedding metallic NPs (acts as sensitizer) are demonstrated to be the alternative route to surmount such shortcomings. Series of glass samples with composition 74TeO2–15B2O3–10ZnO– 1Sm2O3 – (x)Ag, where 0 ≤ x ≤ 0.1 mol% (in excess) are prepared using melt quenching method and the impacts of silver (Ag) NPs concentrations in altering their photoluminescence properties are inspected. The XRD spectra confirmed the amorphous nature of prepared glasses and the presence of Ag NPs are evidenced in EDX spectra. TEM micrographs revealed the distribution of Ag NPs with average size 7.2 nm. Absorption spectra revealed eight bands which most intense between 6F11/2 and 6F1/2. Photoluminescence spectra exhibited three prominent peaks corresponding to the transition from the excited state 4G5/2 to 6H5/2, 6H7/2, and 6H9/2 states, respectively. Our observation may be useful for the development of tellurite glass based nanophotonic devices.

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Azlan, M. N., Mohamed Kamari Halimah, S. O. Baki, and W. M. Daud. "Effect of Neodymium Concentration on Structural and Optical Properties of Tellurite Based Glass System." Materials Science Forum 846 (March 2016): 183–88. http://dx.doi.org/10.4028/www.scientific.net/msf.846.183.

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Neodymium doped zinc borotellurite glass system were fabricated by using conventional melt-quenching method. The structural properties of the glass system were characterized by using X-ray Diffraction (XRD) method and Fourier Transform analysis (FTIR). The amorphous nature of the glass system was confirmed by using x-ray diffraction method. The transmission band of TeO3 structural units which indicate the existence of non-bridging oxygen was shown by FTIR analysis. The optical properties of the glass system were determined by using UV-Vis spectrophotometer. Several bands were shown in the absorption spectra which indicate the characteristic of neodymium ions. The obtained values of indirect optical band gap, Eopt lies in the range of 3.151 eV and 3.184 eV.

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Cao Ye, 曹晔, 崔丹宁 Cui Danning, 童峥嵘 Tong Zhengrong, and 赵健 Zhao Jian. "Dual-Core Photonic Crystal Fiber Polarization Splitter Based on Tellurite Glass." Chinese Journal of Lasers 40, no. 6 (2013): 0605007. http://dx.doi.org/10.3788/cjl201340.0605007.

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Komatsu, Takayuki, Yasuhiko Benino, and Ryosuke Sakai. "Fabrication of Transparent Tellurite-based Glass-Ceramics with Graded Optical Nonlinearity." Journal of the Japan Institute of Metals 62, no. 11 (1998): 1055–62. http://dx.doi.org/10.2320/jinstmet1952.62.11_1055.

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Elisa, Mihail, Raluca Constantina Stefan, Ileana Cristina Vasiliu, Stefan Marian Iordache, Ana-Maria Iordache, Bogdan Alexandru Sava, Lucica Boroica, et al. "A New Zinc Phosphate-Tellurite Glass for Magneto-Optical Applications." Nanomaterials 10, no. 9 (September 18, 2020): 1875. http://dx.doi.org/10.3390/nano10091875.

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This work investigates the structural, magnetic and magneto-optical properties of a new zinc phosphate-tellurite glass belonging to the 45ZnO-10Al2O3-40P2O5-5TeO2 system. The glass was prepared by a wet method of processing the starting reagents followed by suitable melting–stirring–quenching–annealing steps. Specific parameters such as density, average molecular mass, molar volume, oxygen packaging density, refractive index, molar refractivity, electronic polarizability, reflection loss, optical transmission, band gap and optical basicity have been reported together with thermal, magnetic and magneto-optical characteristics. Absorption bands appear in the blue and red visible region, while over 600 nm the glass becomes more transparent. FTIR and Raman spectra evidenced phosphate-tellurite vibration modes proving the P2O5 and TeO2 network forming role. Magnetic measurements reveal the diamagnetic character of the Te-doped glass with an additional weak ferromagnetic signal, specific to diluted ferromagnetic oxides. Positive Faraday rotation angle with monotonous decreasing value at increasing wavelength was evidenced from magneto-optical measurements. The final product is a composite material comprising of a non-crystalline vitreous phase and Te-based nanoclusters accompanied by oxygen vacancies. The metallic-like Te colloids are responsible for the dark reddish color of the glass whereas the accompanying oxygen vacancies might be responsible for the weak ferromagnetic signal persisting up to room temperature.

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Ejigu A, Afrash, K. P. Ramesh, and Gajanan Honnavar. "Vibrational, Thermal, and Physical Characterizations of Some Zinc Niobo Tellurite Glasses Doped with Rare Earth (Eu, Dy)-=SUP=-*-=/SUP=-." Оптика и спектроскопия 129, no. 4 (2021): 527. http://dx.doi.org/10.21883/os.2021.04.50785.1012-20.

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In this communication, we report physical and thermal properties along with Raman spectroscopic investigations on Zinc Niobo Tellurite glass systems doped with Eu2O3 and Dy2O3 at the expense of TeO2. The glasses have been synthesized by the melt quenching technique. Physical parameters like density, molar volume, packing density were estimated. The density of the un-doped glasses increases with increasing mol% of the modifier (ZnO) whereas the glass transition temperature (Tg) decreases. We have observed an increase in the density of the base glass systems which are doped with rare earth (RE) dopants. The packing density of the un-doped glasses remains almost constant with increasing modifier content suggesting that there is not much change in the local environment. Raman spectra were recorded at room temperature and assigned to TeO4 and TeO3 structural units in these glasses. The peak shift, full width at half maximum (FWHM) of the de-convoluted Raman peaks were analyzed to get information about the local environment. It is observed that these compositions of tellurite glasses are good host materials for rare earth ions as they offer voids in the network. Further, it was observed that the rare earth ion doping has not affected the local environment of the glasses; Dy3+ ions have a slightly higher tendency to polarize Te-O bonds than the Eu3+ ions. Keywords: Niobium-based tellurite glasses, XRD, DSC, FTIR.

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O’Donnell, M. D., D. Furniss, V. K. Tikhomirov, D. Briggs, E. F. Smith, and A. B. Seddon. "Surface properties of tellurite and fluorotellurite glasses." Journal of Materials Research 22, no. 6 (June 2007): 1673–84. http://dx.doi.org/10.1557/jmr.2007.0223.

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The surface properties of some freshly cleaved, or polished, quaternary tellurite glasses (TeO2-ZnO-Na2O-Yb2O3and TeO2-ZnO-Na2O-GeO2) and a proposed ternary fluorotellurite core/clad optical fiber pair (TeO2-N a2O-ZnF2) were investigated by means of x-ray photoelectron spectroscopy and chemical durability. Semiquantitative chemical analysis of the x-ray photoelectron spectroscopy spectra of cleaved tungsten-tellurite and fluorotellurite glasses showed good agreement with the batched at.% values when taking into account the effects of processing (e.g., melt fluorine volatilization), and the samples seemed to exhibit negligible hydrolysis. However, spectra of polished surfaces did not yield useful data because of masking of the glass “signal” from organic contamination at the sample surface. The chemical durability of these glasses were studied; specifically, the glass resistance to the attack and the etchability of various acids (aqueous HF, H2SO4, and HCl), alkali (aqueous NaOH), and water at 15, 21, and 60 °C were obtained by simple mass loss experiments and optical microscopy. Based on the appearance of the glass surfaces after immersion in these solutions, aqueous HF was found to be the most promising etchant, however, infrared spectra showed that significant OH was introduced into the glass. Attack of the fluorotellurite glasses was found to proceed at a higher rate in water at 60 °C compared with room temperature, and at both temperatures was shown to be diffusion controlled, with an Arrhenian activation energy estimated as 57 kJ mol−1.

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Pramuda, Adi, Ahmad Marzuki, C. Cari, and Soka Hadiati. "The Most Important Reason to Educate Students with Knowledge to Measure Refractive Index: Evaluated From The Impact On Judd-Ofelt Analysis of Tellurite Based Glass." Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 1 (January 30, 2017): 1. http://dx.doi.org/10.20961/prosidingsnfa.v1i0.4488.

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This study presents an overview influence of the refractive index parameter to the parameter and radiative properties of analyticaly results on Judd Ofelt tellurite based glass, in the hope of clarifying the importance of education with good refractive index measurement. The main stages carried out is the matching between the result of the parameters and the radiative properties of analytical results on Judd Ofelt tellurite glass with composition 55TeO2-2Bi2O3-(40-x) ZnO-3NA2O-xNd2O3 (x = 2.5) from a value the refractive index is estimated by the value of the refractive index obtained by measurement using Brewster angle method. The results showed that the difference in the Brewster angle ranging from 2o course, will change the value of laser parameters and radiative properties Judd-Ofelt analytical results, with the exception of the Branching Ratio value. Still very much needed insight for learners to use this method. This is an example of a case where educators need to create activities that will facilitate learning well to push the conceptual change. Experiment with new variation of activities will encourage a conceptual change and the ability to analogize concept.Keywords: Refractive Index, Judd-Ofelt, Tellurite, Glass

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Amat, Azuraida, Halimah Mohamed Kamari, Che Azurahanim Che Abdullah, Mansor Ishak, Shahrim Mustafa Iskandar, and Sidek Abdul Aziz. "Optical Properties Changes of Ternary Glasses: Gamma Irradiation Effect." Materials Science Forum 840 (January 2016): 118–23. http://dx.doi.org/10.4028/www.scientific.net/msf.840.118.

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Research on tellurite based glass has become important because of it potential in photonic and shielding material. In this work, the changes of the optical properties of ternary tellurite glasses when radiated with 25kGy gamma ray dose were studied. Five glass samples, with composition [(TeO2)70 (B2O3)30]100-x (Bi2O3)x (where x = 5, 10, 15, 20 and 25 mol%) were prepared by melt quenching technique. The optical properties were studied by UV-Visible absorption. The X-Ray Diffraction (XRD) spectra result shows that all glass samples fit the amorphous state. The Fourier Transform Infrared Spectroscopy (FTIR) was used to explore the structural bonding in the prepared glass samples due to exposure. Gamma irradiation causes a profound change in the peak intensity as shown by FTIR spectra which is due to the breaking of the network bonding. Before gamma irradiation, the optical band gap, Eg value decreased from 2.50 eV to 2.30 eV with the addition of Bismuth content. The value kept decreasing (from 2.18 eV to 2.05 eV) following exposure to 25 kGy gamma irradiation due to the increase of non-bridging oxygen (NBO) and the increase of defect in the glass. The finding suggest that the glass with high content of Bi2O3 (25 Bi) give smallest Eg and show less changes (less defect) in FTIR spectra after gamma irradiation which indicate that this glass is more resistant to 25 kGy gamma irradiation dose compared to other glasses.

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Rivera, Victor Anthony Garcia, Fabio A. Ferri, Marcelo H. Gehlen, Luiz Antonio O. Nunes, and Euclydes Marega. "Suitable Er3+-doped tellurite glass-based plasmonic structures for nanophotonic device applications." Optical Engineering 57, no. 08 (August 14, 2018): 1. http://dx.doi.org/10.1117/1.oe.57.8.085102.

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Gorshkov, Oleg N., Igor A. Grishin, Alexander P. Kasatkin, Sergey V. Smetanin, Mikhail F. Churbanov, and Andrey N. Shushunov. "Optical planar waveguides based on tungsten-tellurite glass fabricated by rf-sputtering." Journal of Non-Crystalline Solids 480 (January 2018): 70–73. http://dx.doi.org/10.1016/j.jnoncrysol.2017.08.015.

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Maheswaran, S., Bikash Kumar Paul, Md Abdul Khalek, Sujan Chakma, Kawsar Ahmed, and M. S. Mani Rajan. "Design of tellurite glass based quasi photonic crystal fiber with high nonlinearity." Optik 181 (March 2019): 185–90. http://dx.doi.org/10.1016/j.ijleo.2018.12.033.

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He, Feng-tao, Wen-juan Shi, Jian-lei Zhang, Zhan-qiang Hui, and Fei Zhan. "Polarization splitter based on dual-core photonic crystal fiber with tellurite glass." Optik 164 (July 2018): 624–31. http://dx.doi.org/10.1016/j.ijleo.2018.03.061.

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Sidek, Haji Abdul Aziz, Raouf El-Mallawany, Krishnaswamy Hariharan, and Shaharuddin Rosmawati. "Effect of Concurrent ZnO Addition and AlF3Reduction on the Elastic Properties of Tellurite Based Glass System." Advances in Condensed Matter Physics 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/174362.

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New ternary zinc oxyfluorotellurite (ZOFT) with the composition(ZnO)x-(AlF3)y-(TeO2)z, where5≤x<35;5≤y≤25;60≤z≤70, has been successfully prepared by the conventional rapid melt quenching technique. Density, molar volume, and glass transition temperature have been assessed for each ZOFT glass sample. The longitudinal and transverse ultrasonic waves propagated in each glass sample were measured using a MBS8020 ultrasonic data acquisition system at 5 MHz frequency and room temperature. The longitudinal modulus (L), shear modulus (G), Young’s modulus (E), bulk modulus (K), and Poisson’s ratio (σ) are assessed from both velocity data and their respective density. The compositional dependence of the ultrasonic velocities and related parameters are discussed to understand the rigidity and compactness of the glass system studied.

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Anashkina, Elena A., Maria P. Marisova, Vitaly V. Dorofeev, and Alexey V. Andrianov. "Cascade Brillouin Lasing in a Tellurite-Glass Microsphere Resonator with Whispering Gallery Modes." Sensors 22, no. 8 (April 8, 2022): 2866. http://dx.doi.org/10.3390/s22082866.

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Brillouin microlasers based on microresonators with whispering gallery modes (WGMs) are in high demand for different applications including sensing and biosensing. We fabricated a microsphere resonator with WGMs from a synthesized high-quality tellurite glass with record high Q-factors for tellurite microresonators (Q ≥ 2.5 × 107), a high Brillouin gain coefficient (compared to standard materials, e.g., silica glasses), and a Brillouin frequency shift of 9 ± 0.5 GHz. The high density of excited resonance modes and high loaded Q-factors allowed us to achieve experimentally cascade Stokes-Brillouin lasing up to the 4th order inclusive. The experimental results are supported by the results of the theoretical analysis. We also theoretically obtained the dependences of the output Brillouin powers on the pump power and found the pump-power thresholds for the first five Brillouin orders at different values of pump frequency detuning and Q-factors, and showed a significant effect of these parameters on the processes under consideration.

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Сорокин, А. А., В. В. Дорофеев, С. Е. Моторин, I. Lyashuk, J. Porins, G. Leuchs, and V. Bobrovs. "Формирование неклассических многофотонных состояний света со сжатыми квантовыми флуктуациями в волокнах из модифицированного висмутом теллуритного стекла." Оптика и спектроскопия 130, no. 4 (2022): 544. http://dx.doi.org/10.21883/os.2022.04.52270.54-21.

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An optical fiber with a high Kerr nonlinearity coefficient is proposed and produced from a bismuth-modified tellurite glass for creation of nonclassical multiphoton states of light. Specifically, we propose to use those fibers to squeeze the quantum fluctuations of one of the quadratures of light in the 20 W signal significantly below -10 dB compared to the standard quantum noise limit, which is important for various practical applications. Using numerical modeling based on stochastic nonlinear Schrodinger equation, we demonstrate noise squeezing stronger than -16 dB for lengths of tellurite fiber 6-14 m, while squeezing of -14 dB is expected in silica fibers for lengths of 120-300 m. Analytical formulas were used to analyse the physical factors which limit the squeezing achievable.

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GUO Shi-liang, 郭士亮, 胡春海 HU Chun-hai, 黄惠 HUANG Hui, 沙晓鹏 SHA Xiao-peng, and 李志全 LI Zhi-quan. "Analysis of Coupling Characteristics of Dual-core PhotonicCrystal Fibers Based on Tellurite Glass." ACTA PHOTONICA SINICA 44, no. 1 (2015): 106001. http://dx.doi.org/10.3788/gzxb20154401.0106001.

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Zhou, Xue, Xuegang Li, Shuguang Li, Xin Yan, Xuenan Zhang, Fang Wang, Takenobu Suzuki, Yasutake Ohishi, and Tonglei Cheng. "A Miniature Optical Fiber Fabry–Perot Interferometer Temperature Sensor Based on Tellurite Glass." IEEE Transactions on Instrumentation and Measurement 70 (2021): 1–6. http://dx.doi.org/10.1109/tim.2021.3101310.

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Song, Kwang Yong, Kazi S. Abedin, and Kazuo Hotate. "Gain-assisted superluminal propagation in tellurite glass fiber based on stimulated Brillouin scattering." Optics Express 16, no. 1 (2008): 225. http://dx.doi.org/10.1364/oe.16.000225.

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Ghoshal, Sib Krishna, Nurul Syuhada Mohamad Zake, Ramli Arifin, Md Rahim Sahar, Md Supar Rohani, and Khaidzir Hamzah. "Optical Properties of Oxy-Chloride Tellurite Glass: Role of Samarium Ions." Advanced Materials Research 1107 (June 2015): 437–42. http://dx.doi.org/10.4028/www.scientific.net/amr.1107.437.

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. Achieving tunable optical properties of inorganic glasses via optimized doping of rare earth ions is ever-demanding in photonics. Control and inhibition of luminescence quenching, nonradiative decay and multi-phonon relaxation responsible of reduction of optical performance remains challenging. Doping/co-doping of different rare earth ions, variation of modifiers and embedding metallic nanoparticles (NPs) are thought as alternative routes to enhance optical response are still underway. We examine the influence of samarium ion concentrations on the optical properties of oxy-chlorite tellurite glasses of the form (70-x)TeO2-15MgO-5Li2O-10LiCl-xSm2O3 with 0.0 x 2.5 mol% prepared using melt-quenching method. The structural and optical characterizations are performed via X-ray diffraction (XRD), Ultraviolet-Visible (UV-Vis) absorption and photoluminescence (PL) spectroscopy. The glass density increased from 4.509 - 4.770 with the increase of Sm2O3 contents from 0.0 2.5 mol %. The XRD spectra confirm the amorphous nature of the glass. The absorption spectra exhibit nine prominent peaks corresponding to the transitions from the ground to excited states and the PL spectra reveal four peaks. The optical energy band gap for direct and indirect transitions are increased and Urbach energy decreased from 3.448 - 3.497, 3.165 - 3.232 and 0.217 - 0.175, respectively with the increase of Sm3+ ion concentrations. Furthermore, the significant enhancement in UV-Vis and PL response display the strong influence of samarium ion on optical and structural properties. The mechanism responsible for enhanced optical properties are analyzed and discussed. The results suggest that our careful experimental studies may contribute towards the development of tellurite glass based solid state lasers.

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Amat, Azuraida, Mohamed Kamari Halimah, and Nurazlin Ahmad. "Optical Properties of [(TeO₂)_0.7(B₂O₃)_0.3]_1-x (Bi₂O₃)_x Glass System." Advanced Materials Research 1107 (June 2015): 426–31. http://dx.doi.org/10.4028/www.scientific.net/amr.1107.426.

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Ternary tellurite based glasses [(TeO2)0.7 (B2O3)0.3]1-x (Bi2O3)x was prepared by melt quenching method with suitable melting and quenching temperature. A series of glasses were selected from 0.05 to 0.30 mol % and its glass-forming region was determined. The density, molar volume and refractive index increase when bismuth ions Bi3+ increase, this is due to the increased polarization of the ions Bi3+ and the enhanced formation of non-bridging oxygen (NBO). The values of optical band gap, Eopt decreases when Bi2O3 content increases. Urbach energy for each composition was also calculated and was found to be dependent on the glass composition.

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Amin, Ruhul, Lway Faisal Abdulrazak, Shaymaa R. Tahhan, Noor Mohammadd, Kawsar Ahmed, Francis M. Bui, and Sobhy M. Ibrahim. "Tellurite glass based optical fiber for the investigation of supercontinuum generation and nonlinear properties." Physica Scripta 97, no. 3 (February 21, 2022): 030007. http://dx.doi.org/10.1088/1402-4896/ac5359.

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Abstract This manuscript introduces a unique tellurite core-based photonic crystal fiber (PCF) with silica clad and circular air holes, which manifests highly birefringent and non-linear characteristics. Several optical features, such as birefringence (Br), nonlinear coefficients (NLC), dispersion (D), confinement loss (CL), material loss, etc are thoroughly analyzed and explored by applying the finite element method (FEM). The simulated outcomes validate that by optimizing the formation of the cladding region, a large NLC of 7650 W − 1 Km − 1 , as well as an ultra-high Br of 11.2810 − 2 and zero-dispersion can be accomplished in the offered PCF design at 1.56 μm wavelength. Moreover, the evaluated findings indicate that the stated fiber structure is capable of generating a wide supercontinuum spectrum spanning from 943 to 8038 nm when augmented with a 4.5 kW input power and a pulse duration of 20 f s . Calculations and analyses have been carried out on the effects of higher-order dispersion co-efficients, pulse length and input power on spectrum broadening. The advanced PCF design will be a suitable candidate for practical applications in numerous fields, including bio photonics, biomedical imaging, biosensing, spectroscopy and ultra-broadband signal amplification, etc.

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Bulus, I., J. K. Sheyin, E. Yayock, and A. S. Dalhatu. "Nd3+ CONCENTRATION DEPENDENT OPTICAL FEATURES OF GADOLINIUM BOROPHOSPHO-TELLURITE GLASSES." Open Journal of Physical Science (ISSN: 2734-2123) 1, no. 1 (March 10, 2020): 1–10. http://dx.doi.org/10.52417/ojps.v1i1.84.

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Improving the optical response of glass host with two or more strong network formers via suitable controlled of rare earth ions is the key issue in the fabrication of optical based glass for solid state lasers and light emitting devices. Hence, we report the Nd3+ concentration dependent on optical parameters such as absorption edge, optical band gap (direct and indirect) and Urbach’s energy of gadolinium borophospho-tellurite glasses with chemical composition of 10Gd2O + 30B2O3 + 20P2O5 + (40-)TeO2 + Nd2O3 (where 0.0 ≤ x ≤ 1.0 mol%). The glass samples were synthesized by convectional melt quenching method and characterized through X-Ray Diffraction (XRD) and Ultraviolet Visible Near-Infrared (UV-Vis-NIR) measurements. The amorphous nature of these glasses was confirmed by X-Ray diffraction pattern while the UV-Vis-NIR spectra revealed six absorption peaks corresponding to the transition from ground level 4I9/2 to the various excited state of Nd3+ ions. It was found that the investigated range of Nd3+ doping concentrations has a great influence on aforementioned parameters. The excellent optical features established in the present glass host suggest their potentiality for solid-state lasers and other photonic applications. Bulus, I. | Department of Physics, School of Sciences, Kaduna State College of Education Gidan waya, Kafanchan, Nigeria

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Qiu, Jianrong, and Kazuyuki Hirao. "The Faraday effect in diamagnetic glasses." Journal of Materials Research 13, no. 5 (May 1998): 1358–62. http://dx.doi.org/10.1557/jmr.1998.0192.

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The wavelength dispersions of the Faraday effect in typical diamagnetic glasses, i.e., silica, borate, silicate, tellurite, lead-bismuth-gallate, and As2S3, have been examined. The Verdet constant of the glasses decreases with increasing wavelength in the longer wavelength region of the absorption edge of the glasses, while it increases with increasing optical bandgap of the glasses. These phenomena have been successfully explained based on the Becquerel theory. A guiding principle in designing a diamagnetic glass with a high Verdet constant is proposed.

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Lin, She-Bao, Peng-Fei Wang, Jiang-Bo She, Shen-Nuo Xu, Peng-Fei Zhao, Cheng-Long Yu, Chun-Xiao Liu, and Bo Peng. "Spectroscopic and thermal properties of novel Yb3+-doped TeO2–PbO–NbO2.5 based tellurite glasses with high emission cross-section." Modern Physics Letters B 28, no. 25 (September 24, 2014): 1450198. http://dx.doi.org/10.1142/s021798491450198x.

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Series of 70% TeO 2 - x% PbO – (30 - x%) NbO 2.5 (x = 0, 5, and 10 mol.%) glasses doped with Yb 2 O 3 were prepared by the melt-quenching method. Their emission cross-sections, fluorescence lifetimes and gain coefficient were investigated by the absorption spectra and the fluorescence decay curves, respectively. The results show that the glass with 10% PbO possesses the largest emission cross-section of 1.51 pm2, the fluorescence lifetime of 0.68 ms and the gain coefficient of 1.03 ms ⋅ pm 2. These indicate that this tellurite glass may have potential application as Yb 2 O 3 doped gain medium for solid laser.

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Marisova, Maria P., Alexey V. Andrianov, and Elena A. Anashkina. "Comprehensive Numerical Analysis of Temperature Sensitivity of Spherical Microresonators Based on Silica and Soft Glasses." Sensors 23, no. 2 (January 8, 2023): 717. http://dx.doi.org/10.3390/s23020717.

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In recent years, the use of optical methods for temperature measurements has been attracting increased attention. High-performance miniature sensors can be based on glass microspheres with whispering gallery modes (WGMs), as their resonant frequencies shift in response to the ambient parameter variations. In this work, we present a systematic comprehensive numerical analysis of temperature microsensors with a realistic design based on standard silica fibers, as well as commercially available special soft glass fibers (GeO2, tellurite, As2S3, and As2Se3). Possible experimental implementation and some practical recommendations are discussed in detail. We developed a realistic numerical model that takes into account the spectral and temperature dependence of basic glass characteristics in a wide parameter range. To the best of our knowledge, spherical temperature microsensors based on the majority of the considered glass fibers have been investigated for the first time. The highest sensitivity dλ/dT was obtained for the chalcogenide As2Se3 and As2S3 microspheres: for measurements at room temperature conditions at a wavelength of λ = 1.55 μm, it was as high as 57 pm/K and 36 pm/K, correspondingly, which is several times larger than for common silica glass (9.4 pm/K). Importantly, dλ/dT was almost independent of microresonator size, WGM polarization and structure; this is a practically crucial feature showing the robustness of the sensing devices of the proposed design.

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Journal articles on the topic 'Tellurite-based glass'

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