scholarly journals Single-mode narrow linewidth random fiber laser with enhanced feedback from Rayleigh scattering

2015 ◽  
Vol 64 (8) ◽  
pp. 084206
Author(s):  
Li Yang ◽  
Liu Yan ◽  
Liu Zhi-Bo ◽  
Jian Shui-Sheng
Keyword(s):  
Fiber Laser ◽  
Rayleigh Scattering ◽  
Single Mode ◽  
Narrow Linewidth

All-fiber, narrow linewidth and linearly polarized fiber laser in a single-mode-multimode-single-mode cavity

2016 ◽  
Vol 55 (22) ◽  
pp. 6121 ◽  
Author(s):  
Man Jiang ◽  
Haiyang Xu ◽  
Pu Zhou ◽  
Guomin Zhao ◽  
Xijia Gu
Keyword(s):  
Fiber Laser ◽  
Single Mode ◽  
Narrow Linewidth ◽  
Linearly Polarized ◽  
Single Mode Cavity

Monitoring of single-mode fiber laser heating using Rayleigh scattering and first order fs-PbP fiber Bragg grating

2017 ◽  
Author(s):  
Rudy Desmarchelier ◽  
Romain Cotillard ◽  
Nicolas Roussel ◽  
Steven Armiroli ◽  
Guillaume Laffont
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Laser Heating ◽  
Rayleigh Scattering ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
First Order

scholarly journals High energy, single-mode, narrow-linewidth fiber laser source using stimulated Brillouin scattering beam cleanup

2007 ◽  
Vol 15 (10) ◽  
pp. 6464 ◽  
Author(s):  
B. Steinhausser ◽  
A. Brignon ◽  
E. Lallier ◽  
J. P. Huignard ◽  
P. Georges
Keyword(s):  
Fiber Laser ◽  
Brillouin Scattering ◽  
Stimulated Brillouin Scattering ◽  
Single Mode ◽  
High Energy ◽  
Laser Source ◽  
Narrow Linewidth ◽  
Stimulated Brillouin

scholarly journals A high-power narrow-linewidth 1018 nm fiber laser based on a single-mode–few-mode–single-mode structure

2015 ◽  
Vol 3 ◽  
Author(s):  
Man Jiang ◽  
Pu Zhou ◽  
Hu Xiao ◽  
Pengfei Ma
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Beam Quality ◽  
Power Level ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Narrow Linewidth ◽  
Output Beam ◽  
Optical Efficiency ◽  
Spectral Ranges

We demonstrate an all-fiber high-power Yb-doped 1018 nm fiber laser with a Gaussian-shaped output beam profile based on a mismatched structure, which consists of a pair of single-mode fiber Bragg gratings and a section of few-mode double-cladding gain fiber. The output power is up to 107.5 W with an optical-to-optical efficiency of 63%, and the 3 dB band is 0.26 nm at this power level. Such a structure of single-mode–few-mode–single-mode fiber oscillator can be used to generate high-power narrow-linewidth lasing with excellent beam quality in other spectral ranges.

scholarly journals TUNABLE ULTRA-LONG RANDOM DISTRIBUTED FEEDBACK FIBER LASER

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Nadiah H. Z. Abidin ◽  
M. H. Abu Bakar ◽  
N. Tamchek ◽  
M. A. Mahdi
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Rayleigh Scattering ◽  
Stimulated Raman Scattering ◽  
Single Mode ◽  
Gain Medium ◽  
Distributed Feedback ◽  
Total Output ◽  
Total Output Power ◽  
Symmetrical Configuration

A 72 km open-ended symmetrical tunable random distributed feedback fiber laser (RDB-FL) with different pumping schemes is presented in this study. The random distributed feedback was contributed by Rayleigh scattering in the single-mode fiber while distributed gain was provided by the effect of stimulated Raman scattering. The pumping schemes tested with the configuration was outward and inward pumping, where these would be backward and forward pumping in a non-symmetrical configuration of a fiber laser, respectively. The tuning range was also varied in conjunction with the different pumping schemes to determine the optimum performance. Random lasing in the RDB-FL was achieved by utilizing multiple scattering in the disordered gain medium to achieve resonance. With pump power limited to 1.5 W, the best threshold was measured as low as 1.4 W while the highest total output power was at 8 mW. In outward pumping configuration, the wavelengths that are within the maximum Raman gain (1555-1565 nm) show the best peak powers and total output power with a narrow linewidth, as low as 0.25 nm.

scholarly journals kW-level, narrow-linewidth linearly polarized fiber laser with excellent beam quality through compact one-stage amplification scheme

2017 ◽  
Vol 5 ◽  
Author(s):  
Man Jiang ◽  
Pengfei Ma ◽  
Long Huang ◽  
Jiangming Xu ◽  
Pu Zhou ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Beam Quality ◽  
Scale Up ◽  
Single Mode ◽  
Narrow Linewidth ◽  
Seed Laser ◽  
One Stage ◽  
Linearly Polarized

In this manuscript, we demonstrate high-power, narrow-linewidth linearly polarized fiber laser with excellent beam quality through compact one-stage amplification scheme. By employing a single-mode–multimode–single-mode structure seed laser, a linearly polarized Yb-doped fiber laser with narrow linewidth and high output power is achieved. This laser, when used as a master oscillator, can be capable of suppressing the ASE in the process of power amplification. Thus, only one-stage amplification structure is used to scale up the laser power, and linearly polarized output with a polarization extinction ration of 14 dB, a narrow linewidth of 0.3 nm and an output power of 1018 W are achieved. Moreover, due to the good beam quality of seed laser and the well-designed amplifier stage, the beam quality of the output laser is near-diffraction-limited with $M_{x}^{2}\sim 1.18$ and $M_{y}^{2}\sim 1.24$ at the maximum power, and without mode instability occurring.

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