光电工程, 2017, 44 (10): 953, 网络出版: 2017-11-27
2 kW single-mode fiber laser employing bidirectional- pump scheme
2 kW single-mode fiber laser employing bidirectional- pump scheme
摘要
Abstract
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 20 μm/400 μm. The beam quality M2≤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.
Fan Zhang, Xinhai Zhang. 2 kW single-mode fiber laser employing bidirectional- pump scheme[J]. 光电工程, 2017, 44(10): 953. Fan Zhang, Xinhai Zhang. 2 kW single-mode fiber laser employing bidirectional- pump scheme[J]. Opto-Electronic Engineering, 2017, 44(10): 953.