为了解决高功率线偏振激光器实现难度较大的问题，基于锥棱镜和波片组合设计了一套高效末端偏振转换系统，能够实时将自然偏振激光转变成为线偏振激光。能量转换效率达到97.3%，消光比由18.3%提升到了99%，同时保持了较好的远场发散角。实验证明此种偏振转换方案不会影响激光器本身结构，控制方法简单，无需外加反馈及控制系统，性能稳定可靠，完全可以应用于高功率水平激光器的偏振转换工作。

A high efficient terminal polarization-converting system is designed based on combination of axicons and wave plates to transform naturally polarized laser to linearly polarized laser at real time to resolve difficulty of generating high power linearly polarized laser. Energy conversion efficiency is 97.3% with an enhancement of extinction ratio from 18.3% to 99%. The system also keeps excellent far field divergence. The experiment proves that this polarization-converting method will not affect laser structure. The controlling method is, feedback and controlling system is not needed. The property is stable and reliable. It can absolutely be applied to the polarization-conversion of high power laser.