Abstract
We report on the demonstration of a high power, high beam quality random fiber laser. It is a half-open cavity based on 130-m-long large mode area step-index fiber with a core diameter of 20 μm and a numerical aperture of 0.08. The random laser cavity, whose central wavelength is 1120 nm, is pumped by a 1070 nm Yb-doped fiber oscillator. The maximum output power is 418 W with respect to the injected pump power of 588 W, corresponding to the optical-to-optical efficiency of 71%. The output power, spectral, and temporal characteristics are carefully presented and discussed, showing that such a cavity can export high power random laser stably and effectively. The far field beam quality is also measured, and the profile is nearly a Gaussian shape. This work provides an impactful method to advance the output power of random fiber lasers.
© 2017 Optical Society of America
Full Article | PDF ArticleMore Like This
Jinyan Dong, Lei Zhang, Jiaqi Zhou, Weiwei Pan, Xijia Gu, and Yan Feng
Opt. Lett. 44(7) 1801-1804 (2019)
Yizhu Chen, Chenchen Fan, Tianfu Yao, Hu Xiao, Jinyong Leng, Pu Zhou, Ilya N. Nemov, Alexey G. Kuznetsov, and Sergey A. Babin
Opt. Lett. 46(5) 1185-1188 (2021)
Xueyuan Du, Hanwei Zhang, Xiaolin Wang, Pu Zhou, and Zejin Liu
Opt. Lett. 41(3) 571-574 (2016)