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Gotowa bibliografia na temat „Chalcogenide Waveguides”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Chalcogenide Waveguides"

Наливайко, В. И., i М. А. Пономарева. "Оптические решеточно-волноводные сенсоры на основе халькогенидных стекол". Журнал технической физики 126, nr 4 (2019): 523. http://dx.doi.org/10.21883/os.2019.04.47523.182-18.

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AbstractThe operating principle of the optical grating waveguide sensors is considered. The waveguide sensitivity and detection limit of sensors with waveguides of oxide and chalcogenide glasses are compared. The advantages of the grating waveguide sensors with waveguides with a high contrast of refraction indices are shown. The conditions of obtaining a maximum waveguide sensitivity of the grating waveguide sensors are formulated.

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Mushahid, Husain, i Raman Swati. "Chalcogenide Glass Optical Waveguides for Optical Communication". Advanced Materials Research 679 (kwiecień 2013): 41–45. http://dx.doi.org/10.4028/www.scientific.net/amr.679.41.

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The present research work is focused on fabricating the chalcogenide glass optical waveguides keeping in mind their application in optical communication. The propagation loss of the waveguides is also studied at three different wavelengths. The waveguides were fabricated by dry etching using ECR Plasma etching and the propagation loss is studied using Fabry-Perot technique. The waveguides having loss as low as 0.35 dB/cm at 1.3m is achieved. The technique used to fabricate waveguide is simple and cost effective.

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Luo, Ye, Chunlei Sun, Hui Ma, Maoliang Wei, Jialing Jian, Chuyu Zhong, Junying Li i in. "Interlayer Slope Waveguide Coupler for Multilayer Chalcogenide Photonics". Photonics 9, nr 2 (7.02.2022): 94. http://dx.doi.org/10.3390/photonics9020094.

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The interlayer coupler is one of the critical building blocks for optical interconnect based on multilayer photonic integration to realize light coupling between stacked optical waveguides. However, commonly used coupling strategies, such as evanescent field coupling, usually require a close distance, which could cause undesired interlayer crosstalk. This work presents a novel interlayer slope waveguide coupler based on a multilayer chalcogenide glass photonic platform, enabling light to be directly guided from one layer to another with a large interlayer gap (1 µm), a small footprint (6 × 1 × 0.8 µm3), low propagation loss (0.2 dB at 1520 nm), low device processing temperature, and a high bandwidth, similar to that in a straight waveguide. The proposed interlayer slope waveguide coupler could further promote the development of advanced multilayer integration in 3D optical communications systems.

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Chauvet, Mathieu, Gil Fanjoux, Kien Phan Huy, Virginie Nazabal, Frédéric Charpentier, Thierry Billeton, Georges Boudebs, Michel Cathelinaud i Simon-Pierre Gorza. "Kerr spatial solitons in chalcogenide waveguides". Optics Letters 34, nr 12 (5.06.2009): 1804. http://dx.doi.org/10.1364/ol.34.001804.

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Dyatlov, Mikhail, Philippe Delaye, Laurent Vivien i Nicolas Dubreuil. "Bi-directional spectral broadening measurements for accurate characterisation of nonlinear hybrid integrated waveguides". EPJ Web of Conferences 266 (2022): 01007. http://dx.doi.org/10.1051/epjconf/202226601007.

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The emerging interest in integrated optical technologies raises the need for precise characterisation techniques for waveguides presenting nonlinearities. Here we propose a non-interferometric measurement to accurately characterise the Kerr contribution in hybrid waveguides and illustrate its performances using SiN waveguides with a GSS chalcogenide top-layer. The sensitivity of our technique in terms of nonlinear phase reaches 10 mrad and its accuracy makes possible to extract the nonlinear contributions from the top-layer.

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Anne, Marie-Laure, Julie Keirsse, Virginie Nazabal, Koji Hyodo, Satoru Inoue, Catherine Boussard-Pledel, Hervé Lhermite i in. "Chalcogenide Glass Optical Waveguides for Infrared Biosensing". Sensors 9, nr 9 (15.09.2009): 7398–411. http://dx.doi.org/10.3390/s90907398.

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Huang, Ying, Perry Ping Shum, Feng Luan i Ming Tang. "Raman-Assisted Wavelength Conversion in Chalcogenide Waveguides". IEEE Journal of Selected Topics in Quantum Electronics 18, nr 2 (marzec 2012): 646–53. http://dx.doi.org/10.1109/jstqe.2011.2128856.

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Curry, R. J., A. K. Mairaj, C. C. Huang, R. W. Eason, C. Grivas, D. W. Hewak i J. V. Badding. "Chalcogenide Glass Thin Films and Planar Waveguides". Journal of the American Ceramic Society 88, nr 9 (wrzesień 2005): 2451–55. http://dx.doi.org/10.1111/j.1551-2916.2005.00349.x.

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Zha, Yunlai, Pao Tai Lin, Lionel Kimerling, Anu Agarwal i Craig B. Arnold. "Inverted-Rib Chalcogenide Waveguides by Solution Process". ACS Photonics 1, nr 3 (21.02.2014): 153–57. http://dx.doi.org/10.1021/ph400107s.

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Andriesh, A. M. "Properties of chalcogenide glasses for optical waveguides". Journal of Non-Crystalline Solids 77-78 (grudzień 1985): 1219–28. http://dx.doi.org/10.1016/0022-3093(85)90878-6.

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Rozprawy doktorskie na temat "Chalcogenide Waveguides"

Spurny, Marcel. "Photonic crystal waveguides in chalcogenide glasses". Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2111.

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The growing speed and bandwidth requirements of telecommunication systems demand all-optical on-chip solutions. Microphotonic devices can deliver low power nonlinear signal processing solutions. This thesis looks at the slow light photonic crystals in chalcogenide glasses to enhance low power nonlinear operation. I demonstrate the development of new fabrication techniques for this delicate class of materials. Both, reactive ion etching and chemically assisted ion beam etching are investigated for high quality photonic crystal fabrication. A new resist-removal technique was developed for the chemical, mechanical and light sensitive thin films. I have developed a membraning method based on vapor phase etching in combination with the development of a save and economical etching tool that can be used for a variety of vapour phase processes. Dispersion engineered slow light photonic crystals in Ge₃₃As₁₂Se₅₅ are designed and fabricated. The demonstration of low losses down to 21±8dB/cm is a prerequisite for the successful demonstration of dispersion engineered slow light waveguides up to a group index of around n[subscript(g)] ≈ 40. The slow light waveguides are used to demonstrate highly efficient third harmonic generation and the first advantages of a pure chalcogenide system over the commonly used silicon. Ge₁₁.₅As₂₄24Se₆₄.₅ is used for the fabrication of photonic crystal cavities. Quality factors of up to 13000 are demonstrated. The low nonlinear losses have enabled the demonstration of second and third harmonic generation in those cavities with powers up to twice as high as possible in silicon. A computationally efficient model for designing coupled resonator bandpass filters is used to design bandpass filters. Single ring resonators are fabricated using a novel method to define the circular shape of the rings to improve the fabrication quality. The spectral responses of the ring resonators are used to determine the coupling coefficient needed for the design and fabrication of the bandpass filters. A flat top bandpass filter is fabricated and characterized as demonstration of this method. A passive all-optical regenerator is proposed, by integrating a slow-light photonic crystal waveguide with a band-pass filter based on coupled ring resonators. A route of designing the regenerator is proposed by first using the dispersion engineering results for nonlinear pulse propagation and then using the filter responses to calculate the nonlinear transfer function.

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Buettner, Thomas Frank Sebastian. "Brillouin Frequency Comb Generation in Chalcogenide Waveguides". Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14447.

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Compact optical frequency comb sources with gigahertz repetition rates are desirable for various important applications including arbitrary optical waveform generation, microwave synthesis, spectroscopy and advanced telecommunications. This thesis investigates the exploitation of the interplay of two distinct nonlinear optical effects for the generation of gigahertz repetition rate frequency combs: stimulated Brillouin scattering (SBS) and the optical Kerr-effect. This interplay can lead to the generation of Brillouin frequency combs (BFCs) with repetition rates that are equal to the acoustic resonance associated with SBS. This resonance frequency is about 8 GHz, making BFCs ideal for the advanced photonic applications of interest. In this thesis, we experimentally demonstrate BFCs with equally spaced comb modes that exhibit a stable and repeatable spectral phase. The BFCs are generated in chalcogenide fibre and in chalcogenide waveguides on photonic chips. Through theoretical and numerical investigations we show that, whilst SBS provides the high repetition rate of the combs, the Kerr-nonlinearity plays an important role in achieving equally spaced and phase-coherent spectral components. We also study the interplay of BFCs and photosensitivity via multiphoton absorption in chalcogenide fibres and photonic chips. We show that this interplay can be used to internally inscribe multiwavelength gratings that exhibit several stopbands that are spaced by the acoustic resonance frequency. We then use these gratings in an SBS configuration and demonstrate a significant enhancement of BFC generation by exploiting the slow light effects associated with the grating band edges. This body of work represents an advance in the understanding of BFCs. We study the physics behind phase-coherent BFC generation. The demonstration of chip-based BFC generation is a step towards an all integrated, gigahertz repetition rate, optical frequency comb source. We also demonstrate a novel and flexible method for enhancing chip-based BFC generation that can potentially be extended to other nonlinear effects.

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Karim, Mohammad. "Design and optimization of chalcogenide waveguides for supercontinuum generation". Thesis, City University London, 2015. http://openaccess.city.ac.uk/13592/.

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This research work presents numerical simulations of supercontinuum (SC) generation in optical waveguides based on Ge11.5As24Se64.5 chalcogenide (ChG) material. Rigorous numerical simulations were performed using finite-element and split-step Fourier methods in order to optimize the waveguides for wideband SC generation. Through dispersion engineering and by varying dimensions of the 1.8-cm-long ChG nanowires, we have investigated dispersion curves for a number of nanowire geometries and identified a promising one which can be used for generating a SC with 1300 nm bandwidth pumped at 1550 nm with a low peak power of 25 W. It was observed through successive inclusion of higher-order dispersion coefficients during SC simulations that there is a possibility of obtaining spurious results if the adequate number of dispersion coefficients is not considered. We then investigate MIR SC in dispersion-tailored, air-clad, ChG channel waveguide employing either Ge11.5As24S64.5 or MgF2 glass and ChG rib waveguide employing MgF2 glass for their lower claddings. We study the effect of waveguide parameters on the bandwidth of the SC at the output of 1-cm-long waveguides. Our results show that output can vary over a wide range depending on their design and the pump wavelength employed. At the pump wavelength of 2 μm the SC never extended beyond 4.5 μm for any of our designs. However, SC could be extended to beyond 5 μmfor a pump wavelength of 3.1 μm. A broadband SC spanning from 2 to 6 μm and extending over 1.5 octave could be generated with a moderate peak power of 500 W at a pump wavelength of 3.1 μm using an air-clad, all-ChG, channel waveguide. We show that SC can be extended even further covering the wavelength ranges 1.8-7.7 μm and 1.8-8 μm (> 2 octaves) when MgF2 glass is used for the lower claddings of ChG channel waveguide and rib waveguide, respectively. By employing the same pump source, we show that SC spectra can cover a wavelength range of 1.8-11 μm (> 2.5 octaves) in a channel waveguide and 1.8-10 μm in a rib waveguide employing MgF2 glass for their lower claddings with a moderate peak power of 3 kW. Finally we present microstrucured fibre based design made with same glass to generate SC spectra in the MIR region. Numerical simulations show that such a 1-cm-long fibre can produce a spectrum extending from 1.3 μm to beyond 11 μm (> 3 octaves) with the same pump and peak power applied before. We consider three fibre structures with microstrucured air-holes in their cladding and find their optimum designs through dispersion engineering. Among these, equiangular-spiral microstrucured fibre is found to be the most promising candidate for generating ultrawide SC in the MIR region.

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Lian, Zheng Gang. "Fabrication of rib waveguides and optical fibres in chalcogenide glasses". Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/13750/.

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Chalcogenide glasses offer transmission from the far visible to the far - infrared (IR) wavelength range. They exhibit photosensitivity and have high linear and nonlinear refractive indices. There are many potential applications involving near- and mid- infrared light such as laser delivery, optical data storage and all-optical switching. Two types of optical waveguides based on chalcogenide glasses were developed in this project: (1) The fabrication of planar optical waveguides in thin As40Se60 glass films was carried out via a hot embossing pressing technique. Previous work had shown it possible to fabricate optical waveguides in polymers using hot embossing techniques. Nevertheless using hot embossing to pattern waveguides in a thin chalcogenide glass film did not receive much success. In the present work, single-mode optical rib waveguides operating at telecommunication wavelengths were successfully patterned in a thermally evaporated As40Se60 glass thin film on a Ge17As18Se65 chalcogenide glass substrate. This experimental line demonstrated a fast and economic way of producing planar waveguides in thin chalcogenide glass films. (2) For the first time, a one-layer, solid micro-structured optical fibre (MOF) was successfully drawn from As40Se60 and Ge10As23.4Se66.6 (atomic %) chalcogenide glasses for operation in the near- to mid-infrared. This experimental line showed a new and flexible route to micro-structuring of mid-infrared fibre for operation in the near- to mid-infrared, presenting an all-solid (i.e. glass-glass) alternative to air-glass micro-structuring. The principal advantage of the new approach is mechanical rigidity. A sufficiently large refractive index step between the component glasses exists to enable structures that rely on photonic bandgap effects for their operation to be realised in future work. Underpinning the development of these optical waveguides, the refractive index dispersion of bulk chalcogenide glasses As40Se60, Ge10As23.4Se66.6 and Ge17As18Se65 was measured using ellipsometry from 0.3 μm to 2.3 μm wavelength in this project. Also, the refractive index of thin As40Se60 films was measured and compared with that of bulk As40Se60 samples. Finally a Se precursor purification process was developed to enhance the purity of the end-glasses.

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Lopez, Cedric. "EVALUATION OF THE PHOTO-INDUCED STRUCTURAL MECHANISMS IN CHALCOGENIDE". Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3088.

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Chalcogenide glasses and their use in a wide range of optical, electronic and memory applications, has created a need for a more thorough understanding of material property variation as a function of composition and in geometries representative of actual devices. This study evaluates compositional dependencies and photo-induced structural mechanisms in As-S-Se chalcogenide glasses. An effective fabrication method for the reproducible processing of bulk chalcogenide materials has been demonstrated and an array of tools developed, for the systematic characterization of the resulting material's physical and optical properties. The influence of compositional variation on the physical properties of 13 glasses within the As-S-Se system has been established. Key structural and optical differences have been observed and quantified between bulk glasses and their corresponding as-deposited films. The importance of annealing and aging of the film material and the impact on photosentivity and long term behavior important to subsequent device stability have been evaluated. Photo-induced structures have been created in the thin films using bandgap cw and sub-bandgap femtosecond laser sources and the exposure conditions and their influence on the post-exposure material properties, have been found to have different limitations and driving mechanisms. These mechanisms largely depend on both structural and/or electronic defects, whether initially present in the chalcogenide material or created upon exposure. These defect processes, largely studied previously in individual binary material systems, have now been shown to be consistently present, but varying in extent, across the ternary glass compositions and exposure conditions examined. We thus establish the varying photo-response of these defects as being the major reason for the optical variations observed. Nonlinear optical material properties, as related to the multiphoton processes used in our exposure studies, have been modeled and a tentative explanation for their variation in the context of composition and method of evaluation is presented.
Ph.D.
Other
Optics and Photonics
Optics

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Pope, April. "Near-infrared raman spectroscopy of chalcogenide waveguides and application to evanescent wave spectroscopy of bio-assemblies". Honors in the Major Thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/346.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.
Bachelors
Arts and Sciences
Physics

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Almeida, Juliana Mara Pinto de. "Nanoparticles in oxide and chalcogenide glasses: optical nonlinearities and waveguide fabrication by femtosecond laser pulses". Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-10112015-102237/.

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Femtosecond laser has been an essential tool for nonlinear optics and materials processing at micrometer scale, in which chalcogenide and heavy metal oxide glasses have received special attention not only for their high third-order optical nonlinearities but also due to their transparency up to the infrared regions. Although metallic nanoparticles are expected to improve the optical properties of glasses, there are no enough experimental researches about their influence on the nonlinear refractive index (n2) and nonlinear absorption coefficient (β), moreover at femtosecond regime. Based on the scientific and technological interests on highly nonlinear glasses, the goal of this thesis was to apply femtosecond laser pulses in two main domains: (i) at the basis of fundamental science, to study the effect of metallic nanoparticles in the third-order nonlinear optical properties of glasses; and (ii) at the field of applied science, aiming the development of photonic devices, performed by the fabrication of 3D optical waveguides containing metallic nanoparticles. This aim was achieved through the techniques of z-scan and femtosecond laser micromachining, which provided the nonlinear optical characterization and waveguides development, respectively. First, we analyzed the third-order nonlinear optical properties of the GeO2-Bi2O3 glass containing gold nanoparticles, which promoted saturation of the absorption in the region of the surface plasmon resonance band. On the other hand, these gold nanoparticles did not affect the n2 that kept constant in the wavelength range of 480 - 1500 nm. The same features were investigated for a Pb2P2O7-WO3 matrix doped with copper nanoparticles. In contrast to the gold doped ones, these samples showed a slight enhancement of the nonlinear refractive index when the energy of the excitation approaches the surface plasmon band. We also found out that the Pb2P2O7-WO3 matrix is a good host to grow silver nanoparticles by fs-laser micromachining. Similarly, copper nanoparticles were produced in a borosilicate glass using single-step laser processing. The explanation for metallic nanoparticle formation is addressed in this thesis, as well as, its application in waveguides. Thus, we demonstrated the functionality of optical waveguides containing Cu0 or Ag0 nanoparticles. Still based on the technological interests on glasses doped with nanoparticles, we showed a single-step synthesis of silver sulfide nanoparticles in chalcogenide glass, which was carried in partnership with researches at Princeton University. The materials investigated in this PhD work are of great importance for photonics, in which the synthesis of nanoparticles, fabrication of waveguides and nonlinear optical characterization have been performed.
O laser de femtossegundos tem sido uma ferramenta essencial tanto para a óptica não-linear quanto para o processamento de materiais na escala micrométrica, na qual os vidros calcogenetos e óxidos de metais pesados têm recebido atenção especial, não apenas pelas suas elevadas não-linearidades ópticas de terceira ordem, mas também devido à sua transparência até o infravermelho. Embora seja esperado que nanopartículas metálicas melhorem as propriedades ópticas dos vidros, não existe investigações experimentais suficientes sobre a sua influência no índice de refração não linear (n2) e no coeficiente de absorção linear (β), sobretudo no regime de femtossegundos. Com base nos interesses científicos e tecnológicos de vidros altamente não-lineares, o objetivo deste trabalho foi aplicar pulsos laser de femtossegundos em dois domínios principais: (i) na campo da ciência fundamental, para estudar o efeito de nanopartículas metálicas nas propriedades ópticas não lineares de terceira ordem destes materiais; e (ii) no domínio da ciência aplicada, visando o desenvolvimento de dispositivos fotônicos, realizado pelo fabricação de guias de onda tridimensionais contendo nanopartículas metálicas. Este objetivo foi alcançado através das técnicas de varredura-z e microfabricação com laser de femtossegundos, que proporcionaram a caracterização óptica não-linear e o desenvolvimento de guias de onda, respectivamente. Primeiramente, foram investigadas as propriedades ópticas não-lineares de terceira ordem do vidro GeO2-Bi2O3 contendo nanopartículas de ouro, as quais promoveram saturação da absorção na região da banda de ressonância de plásmon. Por outro lado, essas nanopartículas não afetaram o n2, que se manteve constante no intervalo de comprimento de onda 480 - 1500 nm. As mesmas características foram investigadas para uma matriz Pb2P2O7-WO3 dopada com nanopartículas de cobre. Em contraste com os vidros dopados com ouro, estas amostras apresentaram um ligeiro aumento do índice de refração não linear quando a energia de excitação está próxima da banda de ressonância de plásmon. Observou-se ainda que a matriz Pb2P2O7-WO3 é ideal para a obtenção de nanopartículas de prata através da microfabricação com laser de femtossegundos. Similarmente, nanopartículas de cobre foram produzidas em vidro de borosilicato usando somente uma varredura a laser. A explicação para a formação de nanopartículas metálicas é abordada nesta tese, bem como sua aplicação em guias de onda. Deste modo, demonstrou-se a funcionalidade de guias de onda ópticos compostos por nanopartículas de Cu0 e Ag0. Ainda com base nos interesses tecnológicos em vidros dopados com nanopartículas, demonstrou-se uma síntese de nanopartículas de sulfeto de prata em vidro calcogeneto usando o processamento de única etapa, realizada em parceria com pesquisadores da Universidade de Princeton. Os materiais investigados neste trabalho de doutorado são de grande importância para aplicações em fotônica, em que a síntese de nanopartículas, a fabricação de guias de onda e a caracterização óptica não-linear foram realizadas.

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Kuriakose, Tintu. "Demonstration of the spatial self-trapping of a plasmonic wave". Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD029/document.

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Cette thèse est une contribution au domaine de recherche de la plasmonique nonlinéaire, domaine émergent de l'optique. L'objectif principal est de démontrer expérimentalement l'autofocalisation d'une onde plasmonique.L'étude débute avec la fabrication et la caractérisation de guides plans en verre de chalcogénure de composition Ge-Sb-Se. Une technique basée sur la formation de solitons spatiaux est développée afin d’estimer leurs non-linéarités Kerr. Les propriétés optiques linéaires et non linéaires de ces guides sont étudiées aux longueurs d’onde de 1200 nm et 1550 nm.Des structures plasmoniques sont ensuite conçues pour propager des ondes hybrides plasmon-solitons avec des pertes de propagation modérées. Elles sont constituées des guides précédents recouverts de nanocouches de silice et d'or.Les caractérisations optiques par couplage plasmon-soliton révèlent une forte autofocalisation subie par l’onde qui se propage à l'intérieur de la structure plasmonique. Comme prévu par la théorie, le comportement est présent uniquement pour une lumière polarisée TM. Des résultats expérimentaux détaillés de cette autofocalisation exaltée par effet plasmonique sont présentés pour différentes configurations. Des simulations confirment les résultats expérimentaux obtenus.Cette démonstration fondamentale vient confirmer le concept d’autofocalisation assistée par plasmon tout en révélant un effet nonlinéaire très efficace. Cela ouvre de nouvelles perspectives pour le développement de dispositifs photoniques non linéaires intégrés ainsi que de nouveaux phénomènes physiques
This dissertation contributes to the research area of nonlinear plasmonics an emerging field of optics. The main goal is to demonstrate experimentally the spatial self-trapping of a plasmonic wave.The study begins with the fabrication and the characterization of slab Ge-Sb-Se chalcogenide waveguides. A technique based on the formation of spatial solitons is developed to estimate their Kerr nonlinearities. Linear and nonlinear optical properties of the waveguides are studied at the wavelengths of 1200 nm and 1550 nm.Plasmonic structures are then designed to propagate hybrid plasmon-soliton waves with moderate propagation losses. They are constituted of the previous waveguides covered with nanolayers of silica and gold.Optical characterizations reveal a giant self-focusing undergone by the wave that propagates inside the plasmonic structure. The behavior is present only for TM polarized light as expected from theory. Detailed experimental results of this plasmon enhanced nonlinear self-trapping corresponding to different configurations are presented. Simulations confirm the obtained experimental results.This fundamental demonstration confirms the concept of plasmon-assisted self-focusing while revealing a very efficient nonlinear effect. This opens new perspectives for the development of integrated nonlinear photonic devices as well as new physical phenomena

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Hoffman, Galen Brandt. "Direct Write of Chalcogenide Glass Integrated Optics Using Electron Beams". The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322494007.

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Rivers, Paul Edmund. "Pulsed laser deposition of chalcogenide glass materials for potential waveguide laser applications". Thesis, University of Southampton, 2000. https://eprints.soton.ac.uk/15493/.

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There are many applications for small scale, solid state lasers in the near infrared, where conversely there are very few such devices. A lasing device in a rare earth doped gallium-lanthanum-sulphide thin film is attractive due to emission at wavelengths in the 2 to 5 µm region where many gasses and liquids have fundamental vibrations and overtones and so are detectable. This region also covers the 3 to 5 µm atmospheric 'windows'. Some examples of such detection is presented in this thesis. Using Pulsed Laser Deposition, a relatively new deposition technique, we are able to grow thin films of the chalcogenide glass; gallium-lanthanum-sulphide, gallium-sodium-sulphide and variations of oxysulphides, on a variety of substrates. EXAFS measurements have shown that some of the elements in the glass structure change their bonding arrangement when grown at different energy density producing 'wrong bonds'. This points to the origin of the increased absorption and shift of the optical bandgap which is seen in the materials. It is this tail absorption which ultimately prevented the production of an actual solid state, rare earth laser device. These amorphous semiconductors have a transmission range from the visible through to the mid infrared part of the spectrum. Chalcogenides can be photomodified. i.e. they have an ability to change refractive index when illuminated with photons whose energies lie in the optical bandgap of the material. This process can be reversible or irreversible depending on post deposition treatment and so gives them potential applications such as optical memory, holographic recording media, lithographically written waveguide structures and potentially laser mediums. For such uses a detailed knowledge of the chalcogenide materials optical parameters is needed. A novel technique for the optical characterisation of the thin films has been developed which has is able to measure differences in refractive index to an accuracy of 8.5 x 105. We are able to map refractive index changes across an entire surface and more uniquely whilst they are occurring during, and after, photomodification or heating.

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Części książek na temat "Chalcogenide Waveguides"

Shemesh, K., Yu Kaganovskii i M. Rosenbluh. "Fabrication of Channel Waveguides in Chalcogenide Glass Films by a Focused Laser Beam". W Planar Waveguides and other Confined Geometries, 111–28. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-1179-0_5.

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Bledt, Carlos M., Daniel V. Kopp i James A. Harrington. "Dielectric II-VI and IV-VI Metal Chalcogenide Thin Films in Silver Coated Hollow Glass Waveguides (HGWS) for Infrared Spectroscopy and Laser Delivery". W Ceramic Transactions Series, 1–12. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118511350.ch1.

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Singh, Satya Pratap, Jasleen Kaur, Keshav Samrat Modi, Umesh Tiwari i Ravindra Kumar Sinha. "Tunable Optical Parametric Amplification in Chalcogenide Slot Waveguide". W Springer Proceedings in Physics, 207–10. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9259-1_46.

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Hitaishi, V., K. Jayakrishnan i Nandam Ashok. "Design and Analysis of Chalcogenide GeAsSe Waveguide for Dispersion Properties". W Springer Proceedings in Materials, 87–96. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1616-0_9.

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Sharma, Rohan, Surleen Kaur, Pooja Chauhan i Ajeet Kumar. "Numerical Modeling and Analysis of GAP-Se Chalcogenide Based Rib Waveguide for Nonlinear Applications". W Springer Proceedings in Physics, 129–36. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7691-8_12.

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Boussard-Plédel, C. "Chalcogenide waveguides for infrared sensing". W Chalcogenide Glasses, 381–410. Elsevier, 2014. http://dx.doi.org/10.1533/9780857093561.2.381.

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Todorov, Rossen, Jordanka Tasseva i Tsvetanka Babev. "Thin Chalcogenide Films for Photonic Applications". W Photonic Crystals - Innovative Systems, Lasers and Waveguides. InTech, 2012. http://dx.doi.org/10.5772/32143.

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Pant, R., i B. J. Eggleton. "Chalcogenide glass waveguide devices for all-optical signal processing". W Chalcogenide Glasses, 438–70. Elsevier, 2014. http://dx.doi.org/10.1533/9780857093561.2.438.

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Vu, Khu, i Steve Madden. "Fabrication of Passive and Active Tellurite Thin Films and Waveguides for Integrated Optics". W Amorphous Chalcogenides, 271–303. Pan Stanford Publishing, 2014. http://dx.doi.org/10.1201/b15599-9.

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Streszczenia konferencji na temat "Chalcogenide Waveguides"

Viens, J. F., A. Villeneuve, T. Galstian, M. A. Duguay, K. A. Cerqua-Richardson i S. Schwartz. "Photoinduced integrated optical devices in sulfide chalcogenide glasses". W Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/bgppf.1997.jmh.2.

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Chalcogenide glasses are known to be optically highly transmitting in the 1-10 μm wavelength region and to have applications in both communication and mid-IR optical systems. Arsenic (S,Se)-based chalcogenide glasses also exhibit a wide variety of photostructural effects. Photostructural changes in amorphous chalcogenides are induced by exposing the material to near bandgap light. Such changes, among others, can be structural [1,2] (e.g. change in the density, photoexpansion) or optical [3] (e.g. photodarkening, refractive index change). Thin films of As-S-(Se) also exhibit photoinduced volume effects similar to those seen in bulk materials. This fact makes the application of the chalcogenide glass films to guided wave optical devices, very attractive. With suitable bandgap light exposure techniques, a variety of photoinduced integrated optical components can be patterned on thin films of chalcogenide glasses.

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Croitoru, N., E. Goldenberg, D. Mendleovic, S, Ruschin i N. Shamir. "Infrared Chalcogenide Tube Waveguides". W O-E/LASE'86 Symp (January 1986, Los Angeles), redaktor Paul Klocek. SPIE, 1986. http://dx.doi.org/10.1117/12.961107.

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Madsen, Christi K., Mehmet Solmaz i Robert Atkins. "High-index-contrast chalcogenide waveguides". W Integrated Optoelectronic Devices 2008, redaktorzy Louay A. Eldada i El-Hang Lee. SPIE, 2008. http://dx.doi.org/10.1117/12.768583.

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Madsen, C., W. Tan, X. Xia, W. Snider i I. Zhou. "Hybrid Chalcogenide/Lithium Niobate Waveguides". W Frontiers in Optics. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/fio.2010.ftup5.

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Ahmad, Raja, Chams Baker i Martin Rochette. "Demonstration of chalcogenide optical parametric oscillator". W Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/bgpp.2012.jw4d.3.

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Choi, Duk-Yong. "Chalcogenide Planar Waveguides for Infrared Applications". W Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/cleopr.2018.w4c.1.

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Lezal, D., B. Petrovska, G. Kuncova, M. Pospisilova i J. Gotz. "Chalcogenide - Halide Glasses For Optical Waveguides". W Hague International Symposium, redaktor Jacques Lucas. SPIE, 1987. http://dx.doi.org/10.1117/12.941147.

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Kien Phan Huy, Mathieu Chauvet, Gil Fanjoux, Virginie Nazabal, Frederic Charpentier, Thierry Billeton, Georges Boudebs, Michel Cathelinaud i Simon-Pierre Gorza. "Kerr spatial solitons in chalcogenide waveguides". W 11th European Quantum Electronics Conference (CLEO/EQEC). IEEE, 2009. http://dx.doi.org/10.1109/cleoe-eqec.2009.5191488.

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Madden, Steve, Duk Choi, Andrei Rode i Barry Luther-Davies. "Low loss etched Ge33As12Se55 chalcogenide waveguides". W 2006 Australian Conference on Optical Fibre Technology (ACOFT). IEEE, 2006. http://dx.doi.org/10.1109/acoft.2006.4519311.

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Zha, Yunlai, i Craig B. Arnold. "Solution-processed 3D Chalcogenide Glass Waveguides". W CLEO: Applications and Technology. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/cleo_at.2011.jwa54.

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Raporty organizacyjne na temat "Chalcogenide Waveguides"

Burger, A., i S. A. Payne. Growth of thin film for waveguide laser: Development of chromium doped Zn chalcogenides as efficient, widely tunable mid-infrared lasers. Office of Scientific and Technical Information (OSTI), wrzesień 1998. http://dx.doi.org/10.2172/666135.

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