Results 221 to 230 of about 5,590 (258)

Fiber-coupled random laser

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, Guohua Zhu, Ichesia Fowlkes   +2 more
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Tunable random fiber laser

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., El-Taher, A. E., Harper, P., Podivilov, E. V., Turitsyn, S. K.   +4 more
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Modes in Fiber Random Laser

Conference on Lasers and Electro-Optics 2010, 2010
We present the results of the experimental and theoretical studies of the random laser based on an Er/Ge co-doped single-mode fiber with randomly spaced Bragg gratings.
V. Freilikher, Y. Bliokh, N. Lizárraga, E. I. Chaikina, E. R. Méndez   +4 more
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Random Raman Supercontinuum fiber laser

Optica Advanced Photonics Congress 2022, 2022
We 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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Random fiber laser based on artificially controlled backscattering fibers

Applied Optics, 2017
The 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, Daru, Chen, Haitao, Li, Lijuan, She, Qiong, Wu   +4 more
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Power scalability in random Raman fiber laser based on a random fiber grating

Conference on Lasers and Electro-Optics, 2021
We report a novel high-power single-wavelength random Raman fiber laser based on the localized random feedback provided by an ultrashort random fiber grating inscribed by a femtosecond laser.
Jiancheng Deng, Ming Shen, Yanxin Li, Xuewen Shu   +3 more
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Random fiber laser based on a partial-reflection random fiber grating for high temperature sensing

Optics Letters, 2021
A stable single wavelength random fiber laser (RFL) with a partial-reflection random fiber grating (PR-RFG) for high temperature sensing is proposed and demonstrated for the first time, to the best of our knowledge. The PR-RFG is fabricated with the help of a femtosecond laser, with its highest reflection peak significantly higher than all other ...
Jiancheng, Deng, D V, Churkin, Zuowei, Xu, Xuewen, Shu   +3 more
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The rising power of random fiber laser

2017 16th International Conference on Optical Communications and Networks (ICOCN), 2017
We report on the demonstration of a 418 W high power random fiber laser, which is the highest power to the best of our knowledge. The random laser is a half-open cavity based on 130 meters long passive fiber with core diameter of 20 μm. It is pumped by 1070 nm Yb-doped fiber laser. The central wavelength of 1st order random laser is 1120 nm. The output
Hanwei Zhang, Pu Zhou, Xiaolin Wang, Long Huang, Jiangming Xu, Xiaojun Xu   +5 more
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Recent progress in random fiber lasers

2013 12th International Conference on Optical Communications and Networks (ICOCN), 2013
This paper reviews recent progress in random fiber lasers (RFLs), including fundamental studies on their physical characteristics, design and analysis, as well as their applications, i.e., novel lasers, sensing, and amphfication indicating that RFLs would have an impact on Fiber Optics.
Y. J. Rao, W L. Zhang
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Hydrogel optical fiber random laser

Optics & Laser Technology, 2023
Meiqi Yu, Siqi Li, Yan Kuai, Yu Liu, Zhigang Cao, Feng Xu, Feng Xie, Kang Xie, Liang Lu, Benli Yu, Zhijia Hu   +10 more
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