2 kW single-mode fiber laser employing bidirectional-pump scheme  

作　　者：Fan Zhang Xinhai Zhang 

机构地区：[1]Department of Electrical and Electronic Engineering,Southern University of Science and Technology [2]Key Laboratory of Optical Information Science and Technology,Ministry of Education,Institute of Modern Optics,Nankai University

出　　处：《光电工程》2017年第10期953-956,共4页Opto-Electronic Engineering

基　　金：China Postdoctoral Science Foundation Funded Project （2016M601253）; Shenzhen Peacock Plan （KQCX2015033110182368）; the project of Shenzhen Science and Technology Innovation Committee （JCYJ20160301114759922）.

摘　　要：A 2 kW single-mode fiber laser with two cascade home-made cladding light strippers(CLSs) has been demonstrated by employing bidirectional-pump scheme.2.009 k W signal power is obtained when pump power is 2.63 kW and the slope efficiency is 76.6%.Raman Stokes light is less than-47 d B at 2.009 kW even with a 10-m delivery fiber with core/inner cladding diameter of 20 mm/400 mm.The beam quality M^2≤1.2 and the spectral FWHM bandwidth is 4.34 nm.There is no transverse mode instability and the output power stability of ±0.14% is achieved by special thermal management for a more uniform temperature distribution on the Yb-doped gain fiber.A 2 kW single-mode fiber laser with two cascade home-made cladding light strippers （CLSs） has been demonstrated by employing bidirectional-pump scheme. 2.009 kW signal power is obtained when pump power is 2.63 kW and the slope efficiency is 76.6%. Raman Stokes light is less than -47 dB at 2.009 kW even with a 10-m delivery fiber with core/inner cladding diameter of 20μm/400μm. The beam qualityM2≤1.2 and the spectral FWHM bandwidth is 4.34 nm. There is no transverse mode instability and the output power stability of ±0.14% is achieved by special thermal management for a more uniform temperature distribution on the Yb-doped gain fiber.

关 键 词：传输光纤 不稳定性 光谱 热管理 

分 类 号：TN929.1[电子电信—通信与信息系统] TN244[电子电信—信息与通信工程]