中国激光, 2016, 43 (9): 0901008, 网络出版: 2018-05-25
光栅反射镜作为激光器后腔镜输出径向偏振光
Generating Radially Polarized Laser Beam with Polarization-Selective Grating Mirror as Cavity Mirror
摘要
利用光栅反射镜的偏振选择原理,设计并制备了35层镀膜、1000 nm周期、70 nm槽深的圆环型微结构光栅反射镜。使用该光栅反射镜作为激光二极管抽运的Nd∶YAG激光器的后腔镜,通过对激光谐振腔的优化,获得了功率为13.4 W的径向偏振激光。分析并设计偏振度的计算方法,测量得到径向偏振激光的偏振度可达97%。
Abstract
By utilizing the principle of polarization-selective grating mirrors, a 35-layer circular grating mirror, with 1000 nm period and 70 nm groove depth, has been designed and fabricated. The grating mirror is placed in a laser diode pumped Nd:YAG rod laser system as the cavity mirror. After optimizing the laser system, we get a radially polarized beam, of which the degree of radial polarization and the power are 97% and 13.4 W, respectively.
戚若阳, 高健存, 方茗, 唐新春, 唐淳, 裴正平, 于益. 光栅反射镜作为激光器后腔镜输出径向偏振光[J]. 中国激光, 2016, 43(9): 0901008. 戚若阳, 高健存, 方茗, 唐新春, 唐淳, 裴正平, 于益. Generating Radially Polarized Laser Beam with Polarization-Selective Grating Mirror as Cavity Mirror[J]. Chinese Journal of Lasers, 2016, 43(9): 0901008.