摘要
频谱组束具有结构简单、便于控制等特点,是实现大功率、高质量光纤激光输出的有效手段。介绍了利用光栅、变换透镜等元件进行光纤激光频谱组束的基本结构和原理。综述了光纤激光频谱组束技术的最新进展情况,包括MOPA结构的频谱组束、三光栅结构的频谱组束和基于PTR布拉格光栅的频谱组束;比较分析了各种组束方法的优缺点。分析了当前频谱组束技术要解决的关键问题并展望了其发展前景。
Spectral beam, with simple structure and easy controlling technique, is a valid method for making laser output with high power and good beam quality. The basic structure and principle of spectral beam combining of fiber lasers, with grating and transformation lens as the primary components, are introduced. Recent progress of spectral beam combining of fiber lasers is reviewed, including spectral beam based on MOPA （master oscillator, power amplifier）, spectral beam of three gratings and spectral beam of PTR Bragg grating. The advantages and disadvantages of these methods are analyzed. The key problems in current spectral beam are also analyzed and the development prospect is presented.
出处
《半导体技术》
CAS
CSCD
北大核心
2007年第12期1013-1017,共5页
Semiconductor Technology
基金
国家自然科学基金资助项目(60678018)
关键词
光纤激光
频谱组束
光栅
组束效率
光束质量
fiber laser
spectral beam combining
grating
combining efficiency
beam quality
