传输腔稳频的397nm半导体激光器  

397 nm Semiconductor Laser Stabilized with Scanning Transfer Cavity

作　　者：屈万成[1,2,3] 黄垚[1,2,3] 管桦[1,2] 黄学人[1,2] 高克林[1,2] 

机构地区：[1]中国科学院武汉物理与数学研究所,湖北武汉430071 [2]中国科学院武汉冷原子物理中心,湖北武汉430071 [3]中国科学院研究生院,北京100049

出　　处：《中国激光》2011年第8期45-48,共4页Chinese Journal of Lasers

基　　金：国家973计划(2005CB724502);武汉市晨光计划(Y0W2011001)资助课题

摘　　要：商用的半导体激光器由于其长期漂移大,不能满足单离子光频标中离子的激光冷却和长时间探测的目的。因此,采用了传输腔稳频技术减小商用397nm半导体激光器的长期漂移。利用经过Pound-Drever-Hall(PDH)技术锁定的729nm超稳激光器作参考激光,采用扫描的法布里-珀罗(F-P)干涉仪作传输介质,实现了397nm半导体激光器的长稳锁定。稳频后397nm激光器在1h内的漂移小于1MHz,100s的Allan方差小于1×10-10。这些指标为下一步利用传输腔技术实现866nm激光的长稳锁定打下了基础,同时为优化单个钙离子的激光冷却和长时间精密测量提供了条件。Because of the large long-term drift, the commercial semiconductor laser cannot meet the requirement of the experiments of laser cooling and probing of single ions trapped in ion traps of optical frequency standards for a long time. So, the transfer cavity is used to reduce the long-term drift of a commercial 397 nm laser. An ultra-narrow 729 nm laser stabilized to a super cavity by Pound-Drever-Hall （PDH） scheme is used as reference, and a scanning Fabry-Perot （F-P） cavity is used as transfer medium. The 397 nm laser＇s long-term drift is reduced to less than 1 MHz within 1 h, and the square root of the Allan variance is 1×10^-10 at an averaging time of 102 s. These parameters are the base for stabilizing an 866 nm laser and optimizing the laser cooling and long-term measurement of single ^40 Ca^＋ ion.

关 键 词：激光技术 长稳锁定 传输腔稳频 半导体激光器 

分 类 号：TN365[电子电信—物理电子学] TN248.4