Low threshold 2nd-order random lasing of a fiber laser with a half-opened cavity.
In this paper, we reported the realization of 2nd-order random lasing in a half-opened fiber cavity, which is formed by a FBG with central wavelength at the 1st-order Raman Stokes wavelength and a single-mode fiber (SMF) performing as a random distributed feedback mirror. Using this proposed method, the threshold of 1st-order (2nd-order) random lasing is reduced to 0.7 (2.0) W, which is nearly 2 times lower than that observed in a completely-opened cavity.
Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China) University of Electronic Science and Technology of China, Chengdu, 611731, China.
Wei Li
WL
Zhang
Yun Jiang
YJ
Rao
Jun Mei
JM
Zhu
Zi Xin
ZX
Yang
Zi Nan
ZN
Wang
Xin Hong
XH
Jia
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D007909:Lenses; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*