Relevant bibliographies by topics / Dual-wavelength pumping

Academic literature on the topic 'Dual-wavelength pumping'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Dual-wavelength pumping"

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Seidel, Marcus, Jonathan Brons, Fabian Lücking, Vladimir Pervak, Alexander Apolonski, Thomas Udem, and Oleg Pronin. "Carrier-envelope-phase stabilization via dual wavelength pumping." Optics Letters 41, no. 8 (April 15, 2016): 1853. http://dx.doi.org/10.1364/ol.41.001853.

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Semmalar, S., and S. Malarkkan. "Output Signal Power Analysis in Erbium-Doped Fiber Amplifier with Pump Power and Length Variation Using Various Pumping Techniques." ISRN Electronics 2013 (November 26, 2013): 1–6. http://dx.doi.org/10.1155/2013/312707.

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The scope of this paper is to analyze the output signal power with pump power and length variation in cascaded EDFA simulation model performance. This paper describes the simulation model of Erbium-Doped Fiber Amplifier (EDFA) of variable lengths (10 m, 50 m, and 120 m) with dual pumping techniques (dual forward pumping with two 980 nm wavelengths, dual forward and backward pumping with two 980 nm wavelengths) and Tri-pumping techniques. The simulation models consist of input source and pump power coupled by WDM coupler which gives optimized signal power in the above-mentioned simulation model. The simulation model consists of source with multiple wavelengths (1520 nm–1618 nm), pumping source with the wavelength 980 nm, isolator, and filter. The resulting models accurately represent EDFA optimized output signal power. Simulation results show that choosing careful fiber length 120 m and pump power 1 W in dual pumping provided 0.07 W optimized output signal power compared to other pumping techniques.
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He, Jin-Qi, Yuan Dong, Feng-Dong Zhang, Yong-Ji Yu, Guang-Yong Jin, and Li-Da Liu. "The space-dependent model and output characteristics of intra-cavity pumped dual-wavelength lasers." International Journal of Modern Physics B 30, no. 03 (January 25, 2016): 1550265. http://dx.doi.org/10.1142/s0217979215502653.

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The intra-cavity pumping scheme which is used to simultaneously generate dual-wavelength lasers was proposed and published by us and the space-independent model of quasi-three-level and four-level intra-cavity pumped dual-wavelength lasers was constructed based on this scheme. In this paper, to make the previous study more rigorous, the space-dependent model is adopted. As an example, the output characteristics of 946 nm and 1064 nm dual-wavelength lasers under the conditions of different output mirror transmittances are numerically simulated by using the derived formula and the results are nearly identical to what was previously reported.
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Wang, Ke, Liejia Qian, Hang Luo, Peng Yuan, and Heyuan Zhu. "Ultrabroad supercontinuum generation by femtosecond dual-wavelength pumping in sapphire." Optics Express 14, no. 13 (2006): 6366. http://dx.doi.org/10.1364/oe.14.006366.

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Zhu, Kaiyan, Jiangyong He, Kun Chang, Dengke Xing, Yange Liu, and Zhi Wang. "Tunable and narrow linewidth multi-wavelength Brillouin-erbium fiber laser using dual-wavelength pumping." Optoelectronics Letters 18, no. 6 (June 2022): 349–53. http://dx.doi.org/10.1007/s11801-022-1173-z.

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Singh, Kulwinder, Manjeet Singh Patterh, and Manjit Singh Bhamrah. "A Comparative Analysis of Dual-Order Bidirectional Pumping Schemes in Optical Fiber Raman Amplification." Journal of Optical Communications 40, no. 1 (January 28, 2019): 1–6. http://dx.doi.org/10.1515/joc-2017-0018.

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Abstract In this paper, dual-order bidirectional pumping schemes of distributed fiber Raman amplifier are compared with standard first-order pumping in wavelength division multiplexed optical transmission systems. The novel comparison analysis is carried out in terms of Optical signal-to-noise ratio and Q-factor, on-off gain and noise figure by varying optical input power and fiber lengths. The results indicate that dual-order schemes present 0.02 dB higher OSNR and 5 dB higher Q-factor in comparison to first-order pumping when input optical power is varied from −4 to 5 dBm. Similarly, there is 4 dB higher on-off gain with dual order comparatively to first order when fiber length varied from 10 to 100 km. However, there is degradation in noise figure and Q-factor due to DRBS noise with dual-order pumping when fiber length from 10 to 100 km. Further, the signal power evolutions along fiber length show that there is 5 dBm improvement for 100 km fiber. The novelty of the work is that comparative analysis exhibits improvement in OSNR, on-off gain and Q-factor using dual-order bidirectional pumping.
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Wang, Yan Bin, Jing Hou, Chun Le Xiong, Yang Peng, Rui Song, and Qi Sheng Lu. "Supercontinuum Generation with Dual-Wavelengthpumping in an All-Fiber Device." Advanced Materials Research 216 (March 2011): 553–57. http://dx.doi.org/10.4028/www.scientific.net/amr.216.553.

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We have theoretically investigated supercontinuum (SC) generation with dual-wavelength pumping. The dual-wavelength-pumped source at 1064/686nm generated through four-wave mixing and SC generation have been realized in an all-fiber device. A good agreement between our simulation and experimental results has proved the conjugate action of cross-phase modulation and soliton self-frequency shift can obviously improve the power at the visible wavelengths with group-velocity matching between the visible wave at 686nm and the infrared wave at 1064nm.
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Nyushkov, Boris, Aleksey Ivanenko, Gleb Vishnyakov, Alexey Kharauzov, and Sergey Smirnov. "Active Compensation of Differential Group Delay in a Dual-Wavelength Pulsed Fiber Laser Driven by Quasi-Synchronous Pumping." Photonics 10, no. 1 (December 31, 2022): 42. http://dx.doi.org/10.3390/photonics10010042.

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We report on synchronized dual-wavelength (1.07 μm and 1.24 μm) pulsed lasing driven by a quasi-synchronous primary pumping (at 0.98 μm) of an Yb-doped fiber laser, which incorporates also a P2O5-doped fiber as an intracavity Raman converter. The original method developed for such lasing does not require saturable absorbers (or optical modulators) and dispersion management. We demonstrated that the mechanism of the quasi-synchronous pumping enables the aforesaid stationary lasing in spite of significant differential group delay (DGD) inevitably acquired by light pulses with such different wavelengths during an intracavity round trip due to large normal chromatic dispersion. This DGD can be actively compensated at every round trip by the forced “acceleration” of the pulses at 1.07 μm in the Yb-doped active fiber due to the overrated frequency of the quasi-synchronous pumping at 0.98 μm. This mechanism is related to the particular pulse amplification dynamics in a such gain-modulated active fiber. The demonstrated approach to synchronized dual-wavelength pulsed lasing in a single-cavity fiber laser features remarkable simplicity and reliability. Our proof-of-concept setup enabled the stable two-wavelength generation of regular trains of nanosecond pulses with energy up to 34 nJ at equal repetition rates.
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Räikkönen, E., G. Genty, O. Kimmelma, M. Kaivola, K. P. Hansen, and S. C. Buchter. "Supercontinuum generation by nanosecond dual-wavelength pumping in microstructured optical fibers." Optics Express 14, no. 17 (2006): 7914. http://dx.doi.org/10.1364/oe.14.007914.

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Tombelaine, Vincent, Philippe Leproux, Vincent Couderc, and Alain Barthelemy. "Visible Supercontinuum Generation in Holey Fibers by Dual-Wavelength Subnanosecond Pumping." IEEE Photonics Technology Letters 18, no. 23 (December 2006): 2466–68. http://dx.doi.org/10.1109/lpt.2006.886859.

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Dissertations / Theses on the topic "Dual-wavelength pumping"

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Henderson-Sapir, Ori. "Development of dual-wavelength pumped mid-infrared fibre laser." Thesis, 2015. http://hdl.handle.net/2440/103471.

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There is an urgent need for efficient and compact sources of coherent mid-infrared wavelength radiation (3-5 μm). Cost-effective and bright mid-infrared sources will lead to exciting new sensing applications, ranging from the remote sensing of greenhouse gases, such as CO₂ and methane, to analysis of trace gases in exhaled breath for disease marker identification. The last decade has seen a continuing increase in the output power of various types of mid-infrared sources, such as optical parametric oscillators and amplifiers, quantum cascade lasers and fibre lasers. However, advances in brightness, efficiency, peak power and tunability are still necessary for many applications. In this thesis, we describe a new concept for a fibre laser based on Er³⁺ doped ZBLAN glass that operates in the mid-infrared with lasing centred around 3.5 μm. We used a novel dual-wavelength pumping (DWP) scheme to achieve world-leading efficiency for this material and an output power of 260 mW. The DWP technique uses long-lived excited states in our Er³⁺ ion doped ZBLAN glass gain medium to improve the Stokes efficiency. A low power, 985 nm pump source excites ions from the ⁴I₁₅ ̷₂ ground state to the long lived ⁴I₁₁ ̷₂ state. A large fraction of the ion population can be stored in this level because of its long lifetime, creating a \virtual ground state." A concurrent 1973 nm pump source is then used as the main pump source. This pump excites the ions further to the upper laser level ⁴F₉ ̷₂. Post lasing, the 1973 nm pump cycles the ions between the \virtual ground state" at ⁴I₁₁ ̷₂ and the ⁴F₉ ̷₂ level. The first pump at 985 nm maintains the population in the “virtual ground" as this population is diminished by spontaneous emission and energy-transfer processes, which eject ions from the lasing cycle. In this thesis, we review the literature and the current state-of-the-art in mid-infrared fibre lasers. An overview of the spectroscopic properties of Er³⁺:ZBLAN relevant to mid-infrared operation is presented. The difficulties and issues associated with the creation of mid-infrared radiation are discussed and our spectroscopic investigations of ZBLAN glass and glass fibres are summarised. Multiple wavelengths were used as pump sources for our DWP laser. Our investigation of the optimal wavelength for the DWP technique and the development of suitable sources is described as well. The 3.5 μm laser system is discussed, including the full characterisation of the laser. The thesis is concluded with a summary of the results and an outlook for the future.
Thesis (Ph.D.) -- University of Adelaide, School of Physical Sciences, 2015.
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Malouf, Andrew. "Advancing Mid-IR Lasers." Thesis, 2019. http://hdl.handle.net/2440/124149.

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The mid-IR spectral region is important in a wide range of applications. Many molecules have unique characteristic absorption features in this region due to strong vibrational transitions. Mid-IR lasers, tuned to these absorption lines, are an excellent source for detecting trace gases such as air pollutants for environmental monitoring, biomarkers in exhaled human breath for medical diagnosis, and trace explosives for security. Furthermore, the mid-IR region includes two atmospheric transmission windows, 3 μm– 5 μm and 8 μm– 13 μm, which overlap with the strong absorption lines of many molecules. These transmission windows may be exploited with differential absorption lidar technology to remotely detect atmospheric gases. New and exciting applications for mid-IR lasers will open up as mid-IR lasers become more powerful, stable, tunable, and ultrafast. This thesis details three approaches to advancing mid-IR lasers and their uses. Firstly, a feasibility study is presented that assesses the detectability of diesel exhaust emissions in the atmosphere using differential absorption lidar from an airborne platform. This technology could be developed to identify and monitor major sources of air pollution at any location accessible by an aircraft. The study shows that carbon monoxide is a suitable target gas in the 2.3 μm wavelength band, while nitrogen dioxide and formaldehyde are suitable targets in the 3.5 μm band. Secondly, a numerical model is presented that simulates the physical processes in 3.5 μm dual-wavelength pumped fibre lasers. The model, validated against three experiments reported in literature, provides time domain analysis of ionic energy state populations, predicts laser performance, and has become a valuable tool for the optimisation of fibre laser design. The model was adapted to study Q-switching behaviour of these lasers with high temporal resolution. Finally, this thesis presents a detailed characterisation of graphene under high intensity radiation to understand its suitability for passively mode-locking mid-IR lasers. Intensity dependent transmission measurements were performed on trilayer graphene in the 1.55 μm– 3.50 μm spectral region using a 100 fs laser source and the z-scan technique. The measured saturation intensities were combined with others reported in literature to find that saturation intensity depends on the third power of photon energy in the femtosecond regime while longer pulses show a square root dependence. Furthermore, multilayer graphene is shown to exhibit two-photon absorption as well as saturable absorption when subjected to high intensity radiation. Two-photon absorption limits the effective modulation depth and can be detrimental to mode-locking mid-IR lasers. This explains why lasers beyond the 3 μm wavelength band have not been mode-locked using multilayer graphene.
Thesis (Ph.D.) -- University of Adelaide, School of Physical Sciences, 2020
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Conference papers on the topic "Dual-wavelength pumping"

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SHALABY, Badr M., Alexis Labruyère, Katarzyna Krupa, Denisa Subtirelu, Nelly Rongeat, Alessandro Tonello, and Vincent Couderc. "Visible Supercontinuum Generation by Dual-Wavelength Pumping in Multimode Rectangular Optical FibersVisible Supercontinuum Generation by Dual-Wavelength Pumping in Multimode Rectangular Optical Fibers." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/cleo_si.2014.sth3n.4.

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Nix, Mike, and Scott Yam. "Highly Efficient Dual Wavelength Pumping Scheme for Thulium-Doped Fiber Amplifier." In 2006 IEEE LEOS Annual Meeting. IEEE, 2006. http://dx.doi.org/10.1109/leos.2006.279164.

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Wang, Junjia, Sijing Liang, Yongmin Jung, Qiongyue Kang, Shaif-Ul Alam, and David J. Richardson. "Broadband Silica-Based Thulium Doped Fiber Amplifier Employing Dual-Wavelength Pumping." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/cleo_si.2016.sm1q.2.

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Henderson-Sapir, Ori, Jesper Munch, and David J. Ottaway. "Wavelength Tunable Mid-infrared Er3+:ZBLAN Fiber Laser at 3.5 μm using Dual Wavelength Pumping." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/cleo_si.2015.sw1l.5.

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Wang, Shang, Zhaojun Liu, Zhenhua Cong, Xingyu Zhang, and Zhigang Zhao. "A high-efficiency 240 W-level thin-rod Yb:YAG amplifier with dual-wavelength pumping method." In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jw3b.121.

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A high-efficiency 240 W-level ultrashort pulse laser amplifier based on thin-rod Yb:YAG was obtained by adopting a dual-wavelength (940 nm and 969 nm) pumping method, along with a power extraction efficiency of ~51%.
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Lai, W. J., and Y. C. Tan. "Dual-wavelength Pumping (793 nm + 1600 nm) for Thulium Doped Silica Fiber Laser." In 2018 23rd Opto-Electronics and Communications Conference (OECC). IEEE, 2018. http://dx.doi.org/10.1109/oecc.2018.8729848.

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Antikainen, Aku, Francisco R. Arteaga-Sierra, and Govind P. Agrawal. "Supercontinuum Generation in Photonic Crystal Fibers with Longitudinally Varying Dispersion Using Dual-Wavelength Pumping." In Frontiers in Optics. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/fio.2016.ftu1i.6.

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Zhang, Xianzhong, Kai Zhong, Yang Liu, Shengyue Lu, Hongzhan Qiao, Kefei Liu, Yangfan Gu, Degang Xu, and Jianquan Yao. "A passively Q-switched dual-wavelength laser based on coaxial diode end-pumping configuration." In High-Power Lasers and Applications XI, edited by Ruxin Li, Shibin Jiang, and Ingmar Hartl. SPIE, 2020. http://dx.doi.org/10.1117/12.2573259.

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Liu, Hui, Gregory Gredat, Syamsundar De, Ihsan Fsaifes, Aliou Ly, Remy Vatre, Ghaya Baili, Sophie Bouchoule, Fabienne Goldfarb, and Fabien Bretenaker. "Noise reduction in a dual-frequency VECSEL at telecom wavelength using fully correlated pumping." In 2018 International Topical Meeting on Microwave Photonics (MWP). IEEE, 2018. http://dx.doi.org/10.1109/mwp.2018.8552879.

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Khodasevich, Mikhail A., and Yury A. Varaksa. "Optimization of dual wavelength bidirectional quasi-two-level pumping of Er-doped fiber amplifiers." In International Conference on Lasers, Applications, and Technologies '07, edited by Valentin A. Orlovich, Vladislav Panchenko, and Ivan A. Scherbakov. SPIE, 2007. http://dx.doi.org/10.1117/12.752946.

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