双曲柱面-平面透镜对半导体激光光束的准直性能

根据光线传播的基本原理，位于偏心率恰为相对折射率的双曲折射面外侧焦点上的点光源所发出的发散光，经折射后可成为较为理想的准直光束、因而可以制作用于半导体激光二极管条快轴方向准直的双曲柱面-平面透镜。本文通过计算和推导，用解析式表达并讨论了半导体激光器快轴方向发散光束通过双曲柱面-平面透镜后的半宽度、光强分布和光能转换效率，为正确认识和使用微双曲柱面-平面透镜改善半导体激光快轴方向光束的发散，提高光束质量提供了理论依据。

The collimating performance of hyperboloid cylinder - plane lens to the beam of laser diode bar

According to the basic principle of light - ray propagation, it is ray of a dot light - source that lies on the outer focused point of a hyperbola plane, whoseeccentricity is identical with relatively refractive index, that after a lens become a ideality collimating light beam, so we can make a hyperboloid cylinder - plane lens to collimate the beam of laser diode bar. Through calculations and deducing, the collimating characteristic, the intensity distribution, the transfer efficiency of light energy ,are analytically showed and discussed in this paper, The consequence may be use to design a collimating system with micro - hyperboloid cylinder - plane lens that will considerably decrease the diverging angle of laser diode in fast axis and will be buildup high quality beam.