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Quasi-kilowatt random fiber laser
Optics Letters, 2019The random distributed-feedback Raman fiber laser (RRFL) is a new approach to obtain a high-power laser. In this Letter, we report a RRFL with quasi-kilowatt output power for the first time based on a half-open cavity. It consists of a piece of a large-mode-area passive fiber with a core diameter of 20 μm and a high-reflectivity fiber Bragg grating ...
Hanwei Zhang +10 more
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27th International Conference on Optical Fiber Sensors, 2022
To the best of our knowledge, this is the first time that random fiber laser is used for underwater acoustic detection. The results show a better stability than DFB fiber laser hydrophone.
Meng Tian, Wentao Zhang, Bing Lv
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To the best of our knowledge, this is the first time that random fiber laser is used for underwater acoustic detection. The results show a better stability than DFB fiber laser hydrophone.
Meng Tian, Wentao Zhang, Bing Lv
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Random Raman Supercontinuum fiber laser
Optica Advanced Photonics Congress 2022, 2022We demonstrate the generation of a supercontinuum from modulation instability and Raman self-frequency shift in a distributed feedback random Raman fiber laser. This laser has the potential for random number generation at Tbps speeds.
Frédéric Monet, Raman Kashyap
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Physical Review A, 2011
An optical fiber is treated as a natural one-dimensional random system where lasing is possible due to a combination of Rayleigh scattering by refractive index inhomogeneities and distributed amplification through the Raman effect. We present such a random fiber laser that is tunable over a broad wavelength range with uniquely flat output power and ...
Babin, S. A. +4 more
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An optical fiber is treated as a natural one-dimensional random system where lasing is possible due to a combination of Rayleigh scattering by refractive index inhomogeneities and distributed amplification through the Raman effect. We present such a random fiber laser that is tunable over a broad wavelength range with uniquely flat output power and ...
Babin, S. A. +4 more
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Thulium-doped fiber random laser using random fiber grating for random feedback
2021 19th International Conference on Optical Communications and Networks (ICOCN), 2021We report on a Thulium-doped fiber random laser which uses a random fiber grating for distributed random feedback. The random fiber grating fabricated by using a femtosecond laser provides enhanced Rayleigh scattering in random feedback fiber so the total fiber length of the Thulium-doped fiber random laser is greatly reduced. A high-reflectivity fiber
Decai Zhu, Yaozong Hu, Xinyong Dong
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Applied Physics Letters, 2004
We demonstrate that in fiber-coupled random laser, the threshold energy is twofold reduced and the slope efficiency is fivefold increased when the tip of the fiber is relocated from the surface to the depth of the powder volume. High absorption efficiency, 85%, and high conversion efficiency of population inversion to stimulated emission, 90%, make ...
Mikhail A. Noginov +2 more
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We demonstrate that in fiber-coupled random laser, the threshold energy is twofold reduced and the slope efficiency is fivefold increased when the tip of the fiber is relocated from the surface to the depth of the powder volume. High absorption efficiency, 85%, and high conversion efficiency of population inversion to stimulated emission, 90%, make ...
Mikhail A. Noginov +2 more
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THEORY OF A RANDOM FIBER LASER
Журнал Экспериментальной и Теоретической Физики, 2014We develop the theory explaining the role of nonlinearity in generation of radiation in a fiber laser that is pumped by external light. The pumping energy is converted into the generating signal due to the Raman scattering supplying an effective gain for the signal.
I. V. Kolokolov +3 more
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Random fiber laser based on artificially controlled backscattering fibers
Applied Optics, 2017The random fiber laser (RFL), which is a milestone in laser physics and nonlinear optics, has attracted considerable attention recently. Most previously reported RFLs are based on distributed feedback of Rayleigh scattering amplified through the stimulated Raman-Brillouin scattering effect in single-mode fibers, which require long-distance (tens of ...
Xiaoliang, Wang +4 more
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Recent advances and applications of random lasers and random fiber lasers
Progress in Quantum Electronics, 2021Abstract Random Lasers (RLs) and Random Fiber Lasers (RFLs) have been the subject of intense research since their first experimental demonstration in 1994 and 2007, respectively. These low coherence light sources rely on multiple scattering of light to provide optical feedback in a medium combining a properly excited gain material and a scattering ...
Anderson S.L. Gomes +3 more
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