摘要
传统的可控频率差的双频激光器是基于双折射效应来实现的,研究了S偏振光和P偏振光在全内反射和减反射薄膜的相位特性,提出基于双全内反射和倾斜减反射膜的相移之间的差别来实现可控双频激光。通过调节入射角的大小或设计不同的薄膜结构来控制双频激光器的频率差。最后在实验中发现,氦氖激光器的硬封接的透射窗存在较大的残余热应力双折射,可产生不可控却稳定的残余热应力双折射,用于制作频率差为中频的双频激光器。
The traditional dual frequency laser with controllable frequency difference was based on birefringenceeffect. By studying phase characteristics of the S-polarized and P-polarized light in total internal reflection and antireflectionfilms, a dual frequency laser with controllable frequency difference based on dual total internal reflection andtilted antireflective film is proposed. Frequency difference is controlled by adjusting the incident angle or designing thestructure of antireflective film. Finally,the experimental results show that a hard sealing transmission window of helium-neon laser has large uncontrolled but stable thermal residual stress birefringence. Dual frequency laser with mediumfrequency can be made by this method.
出处
《激光与红外》
CAS
CSCD
北大核心
2016年第8期953-957,共5页
Laser & Infrared
基金
广东科学技术职业学院校级科研项目(No.XJZD201301)资助
关键词
双频激光器
全内反射
相移
双折射
横向塞曼效应
dual frequency laser
total internal reflection
phase shift
birefringence
transverse Zeeman effect
