摘要
基于BTS(Beam Transmission System)整形器件,本文设计了一种针对mini-bar的光纤耦合输出系统,该系统突破了常规方法中mini-bar慢轴准直的焦距限制,可有效简化光束整形结构,提高光束整形效率。ZEMAX模拟和实验验证共同表明:该系统可将4个mini-bar耦合进入105μm/NA 0.22的多模光纤,稳定输出功率达160 W,对应亮度为13.2 MW/(cm2·sr),电-光效率为42.0%。该系统为小芯径非单管DL光纤耦合模块的研制提供了一条可行途径。
Based on beam shaping device with beam transmission system（BTS）,a fiber-coupled system using mini-bar was designed.This beam shaping method can break through the limitation of focal length in slow axis collimation, which can improve the shaping efficiency and simplify the system structure.The ZEMAX simulation and experiments show that the system can couple 4 mini-bar beams into a fiber of 105 μm core diameter and 0.22 numerical aperture, and the fiber output power can achieve 160 W,the brightness is 13.2 MW/（cm^2 ·sr）,and the E -O efficiency is 42.0% at operation current 60 A.This system provides an available route for the research of small core diameter fiber-coupled diode laser.
出处
《激光与红外》
CAS
CSCD
北大核心
2017年第2期174-178,共5页
Laser & Infrared
基金
中物院高功率光纤激光器项目(No.2014PY-4)
中物院高能激光科学与技术重点实验室基金课题(No.HEL2014-08)资助
关键词
半导体激光器
小芯径
光纤耦合
设计
diode laser
small core diameter
fiber-coupled
design
