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.
出处
《光电工程》
CAS
CSCD
北大核心
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）.
关键词
传输光纤
不稳定性
光谱
热管理
fiber laser
high power
stimulated Raman scattering
power stability
