强激光与粒子束, 2014, 26 (1): 011018, 网络出版: 2014-01-17
高功率隔离器热致退偏分析与补偿设计
Investigation of thermal induced depolarization in high-power Faraday isolator and its compensation design
法拉第效应 隔离器 高功率 热致退偏效应 热补偿 Faraday effect isolator high-power thermal depolarization thermal compensation
摘要
针对磁光晶体在大功率光隔离器中的应用,结合实际光学元件参数,利用琼斯矩阵分析了隔离度与入射光功率间的关系。提出基于外置材料,对磁光晶体热致退偏效应的补偿方案: 针对两种不同的常见补偿材料,给出了它们的设计参数,并对两种材料的补偿效果进行对比。结果表明,在50 W的光功率下,利用CaF2晶体和SiO2,可分别提高隔离度约15 dB和4 dB。
Abstract
For the use of the magneto-optic crystal in a high-power optical isolator, the relationship between the isolation and the incident light power is analyzed with Jones matrix using the parameters of actual optical elements. A compensation scheme for thermal induced depolarization in magneto-optic crystal is proposed, which is based on external material. The design method of the compensation scheme for two different materials is given. The result shows that at the power of 50 W, by using CaF2 crystal and SiO2, the isolation can be increased by 15 dB and 4 dB respectively.
胡姝玲, 邬志成, 陆乔乔, 张春熹, 牛燕雄. 高功率隔离器热致退偏分析与补偿设计[J]. 强激光与粒子束, 2014, 26(1): 011018. Hu Shuling, Wu Zhicheng, Lu Qiaoqiao, Zhang Chunxi, Niu Yanxiong. Investigation of thermal induced depolarization in high-power Faraday isolator and its compensation design[J]. High Power Laser and Particle Beams, 2014, 26(1): 011018.