基于古斯-汉欣位移差分信号的波长锁定  

Stabilizing the laser wavelength based on the differential signal in the Goos-Hanchen shift

作　　者：杨振[1] 聂义友[1] 王贤平[1] 袁文[1] 李渊华[1] 桑明煌[1] 

机构地区：[1]江西师范大学物理与通信电子学院,南昌330022

出　　处：《中国科学：物理学、力学、天文学》2014年第6期564-568,共5页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家自然科学基金(批准号:61265001,11264016);江西教育厅科技基金(编号:GJJ13237,GJJ12172)资助项目

摘　　要：利用双面金属包覆波导对古斯-汉欣(GH)位移具有极大的增强效应和GH位移对入射光波长极其灵敏这两特性,本文基于GH位移差分信号提出了一种稳定度高的波长锁定方法.在实验中,测量信号是反射光束位置的移动,不受激光光强涨落的影响,可有效避免因激光光强波动所带来的误差,波长锁定的稳定度能进一步提高.该方法能实现皮米量级的激光波长锁定,且其制作工艺简单.Based on the differential signal in the Goos-H？nchen shift, a method for stabilizing the laser wavelength with high sensitivity is proposed. In the symmetrical metal-cladding waveguide, the Goos-H？nchen is largely enhanced and highly responds to the variation in the wavelength of incident light. Since the measurement of the Goos-H？nchen shift is immune to the intensity fluctuation in laser source, the wavelength shift down to 0.1 pm can be detected in our method. The proposed device could have potential applications in the optical commutation system.

关 键 词：波长锁定 双面金属包覆波导 超高阶导模 古斯-汉欣位移 差分信号 

分 类 号：TN929.11[电子电信—通信与信息系统]