摘要
基于钠层的589 nm激光导引星技术,结合地基光学望远镜自适应光学系统,可以有效补偿大气扰动造成的光信号波前畸变,在天文观测、星地激光通信、空间碎片跟踪等诸多领域有着重要的应用前景。介绍了一种新型的589 nm钠导星激光器技术:金刚石拉曼钠导星激光器。金刚石晶体超高的热导率和无空间烧孔效应的增益特性是提高激光输出功率和实现单纵模运转的关键,目前已获得22 W的连续波单频钠导星激光器输出。金刚石拉曼激光器技术提供了一种实现高功率钠激光输出的高效方案,并为高功率微秒脉冲、高重频脉冲、频率啁啾等新型钠导星激光器系统提供了新的思路。
Sodium guide star generated in sodium layer by 589 nm laser is considered as a critical component for ground-based optical telescope adaptive optical systems to correct the atmospheric aberrations of light transmission.Such kind of systems are of intense interest for applications in astronomical observations,ground-space optical communications and space debris tracking.Here,a novel sodium guide star laser based on diamond Raman technique is proposed and demonstrated.Output power scaling and single frequency operation are favored for the novel laser due to the high thermal conductivity of diamond crystal and the gain nature of the spatial hole burning-free.Recently,up to 22 W single mode diamond Raman laser at 589 nm had been demonstrated.Diamond Raman laser affords a highly efficient scheme for achieving high power sodium laser,and moreover,it is well suited to achieving microsecond pulsed,high repetition rate pulsed,and frequency chirped formats of interest for advanced sodium guide star laser systems.
作者
杨学宗
冯衍
YANG Xuezong;FENG Yan(Laboratory of High Power Fiber Laser Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center for Advanced Laser Technology,Hebei University of Technology,Tianjin 300401,China;Macquarie University,Sydney 2109,Australia)
出处
《量子电子学报》
CAS
CSCD
北大核心
2020年第4期447-455,共9页
Chinese Journal of Quantum Electronics
关键词
激光技术
钠导星激光器
受激拉曼散射
金刚石拉曼激光器
单频激光器
laser technology
sodium guide star laser
stimulated Raman scattering
diamond Raman laser
single frequency laser
