摘要
为实现基于微透镜阵列的高功率半导体激光器堆栈光束整形,对带有快轴准直透镜的高功率半导体激光器堆栈慢轴光束准直技术进行研究。在慢轴光束准直理论分析基础上,着重研究了慢轴填充因子对其光束准直的影响,并对不同填充因子的半导体激光器慢轴光束准直方案进行了分析。针对实际使用的填充因子0.5的高功率半导体激光器堆栈采用以Bar条为单元进行整体准直设计,并采用基于空间扫描法的发散角测试装置对慢轴准直后剩余发散角进行测试,实现准直后剩余发散角半角2.12°,实验表明该准直方法的有效性。
In order to realize the beam shaping of high-power diode laser stack by microlens array, the technique of high- power diode laser stack slow axis direction beam collimation is researched, the high-power diode laser stack is accompanied with micro-cylindrical-lens of fast axis collimation. On the basis of the analysis of the slow axis direction beam collimation, the impact of fill factor in the slow axis on the beam collimation is studied chiefly, and the collimating programs of diode lasers with different fill factors are analyzed. Using the bar as the collimating unit for the high-power diode laser stack with the fill factor 0.5, we test the remaining divergence angle of slow axis direction beam after collimation by the testing equipment based on space scanning, and achieve the half of the remaining divergence angle 2.12°. The experimental results show that the collimating way of diode laser slow axis direction beam is effective.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2015年第5期50-55,共6页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
激光光学
半导体激光器堆栈
慢轴准直
柱透镜
剩余发散角
laser optics
diode laser stack
slow axis collimation
cylindrical lens
remaining divergence angle
