对目前实现超宽带(数十到数百纳米)可调谐全固态单频激光器的常用方法进行了综述, 介绍了棱镜色散腔、闪耀光栅色散腔、体布拉格光栅衍射腔、双折射滤光片干涉腔、声光调谐光学滤波器衍射腔和电光调谐光学滤波器干涉腔调谐选频的原理及实现方式。对以上方案的优缺点、实现的难易程度及可操作性进行了对比分析,分析表明超宽带可调谐全固态单频激光器可通过不同调谐方法结合谐振腔型设计或频率精选器件(如FP标准具等)实现。

This paper mainly summarizes different methods to implement all-solid-state single-frequency laser which can broadly tune tens to hundreds nanometers, and the principle and implementation of frequency selection are detailedly described in methods of both prism dispersion cavity and blazed grating dispersion cavity, and such methods as volume bragg grating diffraction cavity, birefringent filters interference cavity, acousto-optic tunable filter diffraction cavity and electro-optic tunable filter interference cavity. Finally, the advantages, disadvantage, complexity and feasibility for the various methods are analyzed. It is thought that ultra-wideband tunable all-solid-state single-frequency lasers can be realized by above methods in combination with the design of resonator and frequency precision-selection device as FP etalon.