Chinese Optics Letters, 2017, 15 (4): 041402, Published Online: Jul. 25, 2018
33 W continuous-wave single-frequency green laser by frequency doubling of a single-mode YDFA
Abstract
A high power continuous-wave single-frequency green fiber laser by second-harmonic generation of a Yb-doped fiber amplifier (YDFA) is developed. A linearly polarized single-mode fiber amplifier produces a 60 W infrared laser at 1064 nm with a 103 W incident diode pump laser at 976 nm, corresponding to an optical conversion efficiency of 58%. An external bow-tie enhancement cavity incorporating a noncritically phase-matched lithium triborate crystal is employed for second-harmonic generation. A 33.2 W laser at 532 nm is obtained with a 45 W incident 1064 nm fundamental laser, corresponding to a conversion efficiency of 74%.
Shuzhen Cui, Lei Zhang, Huawei Jiang, Yan Feng. 33 W continuous-wave single-frequency green laser by frequency doubling of a single-mode YDFA[J]. Chinese Optics Letters, 2017, 15(4): 041402.