光学学报, 2017, 37 (1): 0114001, 网络出版: 2017-01-13
端抽运Nd∶YAG板条激光器的退偏特性及偏振控制 下载: 508次
Depolarization Feature and Polarization Control in End-Pumped Nd∶YAG Slab Lasers
激光技术 板条激光器 退偏补偿 偏振控制 laser technique slab laser Nd∶YAG Nd∶YAG depolarization compensation polarization control
摘要
研究了高功率端抽运Nd∶YAG板条激光器的退偏特性。使用高功率偏振片和90°石英旋光片, 实现了对高功率板条激光器输出激光的偏振状态控制和退偏补偿, 有效提升了激光器线偏振光输出功率,改善了线偏振光近场光强分布的均匀性。实验结果表明, 通过优化偏振补偿, 输出线偏振激光功率由8.7 kW提升至9.6 kW, 退偏率由30.8%降至3.1%。
Abstract
The depolarization feature in high power, end-pumped Nd∶YAG slab lasers is studied. The polarization control and depolarization compensation in high power slab laser output are realized with the usage of high power polarizer and 90°quartz rotator, which effectively improves the polarized output power and the uniformity of the near-field light intensity distribution. The experimental results indicate that, via the optimization of depolarization compensation, the output power of linearly polarized laser is increased from 8.7 kW to 9.6 kW, and the depolarization rate is decreased from 30.8% to 3.1%.
吴振海, 徐浏, 王君涛, 汪丹, 周唐建, 胡浩. 端抽运Nd∶YAG板条激光器的退偏特性及偏振控制[J]. 光学学报, 2017, 37(1): 0114001. Wu Zhenhai, Xu Liu, Wang Juntao, Wang Dan, Zhou Tangjian, Hu Hao. Depolarization Feature and Polarization Control in End-Pumped Nd∶YAG Slab Lasers[J]. Acta Optica Sinica, 2017, 37(1): 0114001.