High efficiency frequency doubling with a passive enhancement cavity. (6th February 2019)

• Record Type: Journal Article
• Authors: Cui, Shuzhen; Zhang, Lei; Jiang, Huawei; Pan, Weiwei; Yang, Xuezong; Qin, Guanshi; Feng, Yan
• Is Part Of: Laser physics letters. Volume 16:Number 3(2019:Mar.)
• Publication Date: 2019-02-06
• Subjects: fiber lasers -- frequency doubled -- laser resonators; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aafd1c
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: Highly efficient frequency doubling of a continuous-wave Yb-doped fiber laser with a passively-locked enhancement cavity is achieved. The increase in efficiency is a result of improved transverse mode matching between the fiber and doubling cavities, which is enabled by an alignment method presented here. An optical conversion efficiency as high as 36.8% from a launched 976 nm diode pump to a 532 nm green laser is obtained. The maximum 532 nm output is 24.5 W, which is limited by the onset of parasitic oscillations in the fiber laser.