摘要
角锥棱镜阵列具有溯源反射和准相位共轭两大特点,可在一定程度上补偿高平均功率固体激光器的热畸变。但由于这种角锥棱镜阵列自身的缺陷和由它构成的谐振腔输出激光模式众多的特点,限制了其在谐振腔中的应用。分析了角锥棱镜阵列谐振腔产生多模输出的原因,提出了采用腔内滤波的方法实现单模输出。理论模拟和实验研究结果表明:利用该方法可较好地改善阵列角锥棱镜谐振腔的输出特性,获得了近5倍衍射极限的输出。
The thermal distortions of a high average power solid-state laser could be compensated by cube corner arrays （CCA） due to the quasi phase conjugation. But the applications of a CCA have been limited when it is used as a resonator, because of the numerous cavity modes caused by its retro-reflection characteristics and the high loss caused by the edge diffraction of the CCA. The output properties of a cube corner array resonator are analyzed and a new method to obtain single mode has been proposed by using an intracavity filter to suppress the high order cavity modes. The theoretical and experimental results show that the output beam quality could be improved to nearly 5 times the diffraction limit by cube corner arrays with intracavity filter.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2009年第6期813-816,共4页
High Power Laser and Particle Beams
基金
中国工程物理研究院基金项目(Z0405)
关键词
角锥棱镜阵列
准相位共轭
腔模
内腔滤波器
谐振腔
cube corner arrays
quasi phase conjugation
cavity mode
intracavity filter
resonator
