1030 nm high power polarization maintained fiber laser with narrow linewidth and near-diffraction-limited beam quality

2018 ◽  
Author(s):  
Qiuhui Chu ◽  
Pengfei Zhao ◽  
Honghuan Lin ◽  
Bopeng Wang ◽  
Chao Guo ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Beam Quality ◽  
Narrow Linewidth

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 2.58 kW Narrow Linewidth Fiber Laser Based on a Compact Structure with a Chirped and Tilted Fiber Bragg Grating for Raman Suppression

Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 532
Author(s):  
Xin Tian ◽  
Chenhui Gao ◽  
Chongwei Wang ◽  
Xiaofan Zhao ◽  
Meng Wang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
High Power ◽  
Slope Efficiency ◽  
Laser Power ◽  
Beam Quality ◽  
Bragg Grating ◽  
High Signal ◽  
Output Coupling ◽  
Narrow Linewidth

We report a high power, narrow linewidth fiber laser based on oscillator one-stage power amplification configuration. A fiber oscillator with a center wavelength of 1080 nm is used as the seed, which is based on a high reflection fiber Bragg grating (FBG) and an output coupling FBG of narrow reflection bandwidth. The amplifier stage adopted counter pumping. By optimizing the seed and amplifier properties, an output laser power of 2276 W was obtained with a slope efficiency of 80.3%, a 3 dB linewidth of 0.54 nm and a signal to Raman ratio of 32 dB, however, the transverse mode instability (TMI) began to occur. For further increasing the laser power, a high-power chirped and tilted FBG (CTFBG) was inserted between the backward combiner and the output passive fiber, experimental results showed that both the threshold of Stimulated Raman scattering (SRS) and TMI increased. The maximum laser power was improved to 2576 W with a signal to Raman ratio of 42 dB, a slope efficiency of 77.1%, and a 3 dB linewidth of 0.87 nm. No TMI was observed and the beam quality factor M2 maintained about 1.6. This work could provide a useful reference for obtaining narrow-linewidth high-power fiber lasers with high signal to Raman ratio.

High power narrow linewidth LP11 mode fiber laser using mode-selective FBGs

2018 ◽  
Vol 15 (11) ◽  
pp. 115101 ◽  
Author(s):  
Jiaxin Song ◽  
Haiyang Xu ◽  
Hanshuo Wu ◽  
Liangjin Huang ◽  
Jiangming Xu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Narrow Linewidth

Tandem-Pumped High-Power Narrow-Linewidth Fiber Laser Tunable From 1060–1090 nm

2020 ◽  
Vol 38 (6) ◽  
pp. 1461-1467 ◽  
Author(s):  
Jiading Tian ◽  
Qirong Xiao ◽  
Dan Li ◽  
Yusheng Huang ◽  
Zehui Wang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Narrow Linewidth

High power spectrally beam combined fiber laser with near-diffraction limited beam quality

2007 ◽  
Author(s):  
Thomas H. Loftus ◽  
Paul R. Hoffman ◽  
Alison M. Thomas ◽  
Marc Norsen ◽  
Robert Royse ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Beam Quality

scholarly journals Monolithic high-average-power linearly polarized nanosecond pulsed fiber laser with near-diffraction-limited beam quality

2018 ◽  
Vol 6 ◽  
Author(s):  
Long Huang ◽  
Pengfei Ma ◽  
Daren Meng ◽  
Lei Li ◽  
Rumao Tao ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Linear Polarization ◽  
Beam Quality ◽  
Average Power ◽  
Narrow Linewidth ◽  
High Average Power ◽  
Maximal Output Power ◽  
Maximal Output ◽  
Pulsed Fiber Laser

An all-fiberized high-average-power narrow linewidth ns pulsed laser with linear polarization is demonstrated. The laser system utilizes a typical master oscillator power amplifier (MOPA) configuration. The stimulated Brillouin scattering (SBS) is effectively suppressed due to the short fiber length and large mode area in the main amplifier, combined with the narrow pulse duration smaller than the phonon lifetime of SBS effect. A maximal output power of 466 W is obtained with a narrow linewidth of ${\sim}$203.6 MHz, and the corresponding slope efficiency is ${\sim}$80.3%. The pulse duration is condensed to be ${\sim}$4 ns after the amplification, corresponding to the peak power of 8.8 kW and the pulse energy of $46.6~\unicode[STIX]{x03BC}\text{J}$. Near-diffraction-limited beam quality with an $M^{2}$ factor of 1.32 is obtained at the output power of 442 W and the mode instability (MI) is observed at the maximal output power. To the best of our knowledge, this is the highest average output power of the all-fiberized narrow linewidth ns pulsed fiber laser with linear polarization and high beam quality, which is a promising source for the nonlinear frequency conversion, laser lidar, and so on.

Widely tunable (>100 nm) continuous-wave narrow-linewidth high-power thulium fiber laser

2009 ◽  
Author(s):  
Timothy S. McComb ◽  
Vikas Sudesh ◽  
Lawrence Shah ◽  
Robert A. Sims ◽  
Martin C. Richardson
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Continuous Wave ◽  
Narrow Linewidth ◽  
Thulium Fiber Laser

High power Q-switched fiber laser system emitting 26 mJ pulses with near diffraction-limited beam quality

2012 ◽  
Author(s):  
Fabian Stutzki ◽  
Florian Jansen ◽  
Andreas Liem ◽  
Cesar Jauregui ◽  
Jens Limpert ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Beam Quality ◽  
Laser System

High-power Single-frequency Narrow Linewidth Fiber Laser with Nonlinear Two-wave Mixing

2011 ◽  
Vol 32 (2) ◽  
pp. 159-163 ◽  
Author(s):  
代志勇 DAI Zhi-yong ◽  
张晓霞 ZHANG Xiao-xia ◽  
彭增寿 PENG Zeng-shou ◽  
李剑峰 LI Jian-feng ◽  
欧中华 OU Zhong-hua ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Single Frequency ◽  
Wave Mixing ◽  
Narrow Linewidth ◽  
Two Wave Mixing
Sign in / Sign up

Export Citation Format

Share Document