External cavity diode laser as a stable-frequency light source for application in laser cooling of molecules  

作　　者：杨秀秀 尹燕宁 李兴佳 徐素鹏 夏勇 印建平 

机构地区：[1]State Key Laboratory of Precision Spectroscopy, Department of Physics,East China Normal University

出　　处：《Chinese Optics Letters》2016年第7期65-69,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11374100,91536218,and 11274114);the Natural Science Foundation of Shanghai Municipality(No.13ZR1412800)

摘　　要：We demonstrate a scheme to use a Littman configuration external cavity diode laser （ECDL） as a stablefrequency light source to stabilize two cw single-mode Ti：sapphire lasers for laser cooling of magnesium fluoride molecules. An ECDL based on the Littman configuration is constructed and stabilized by a digital signal processor system. We stabilize the frequency of our ECDL to 4-0.77 MHz precision over 10 h and the Allan standard deviation reaches 2.6 × 10-11 at an integration time of 10 s. We lock two Ti：sapphire lasers through a transfer cavity, and either laser has a long-term frequency stability of 4-2.5 MHz.We demonstrate a scheme to use a Littman configuration external cavity diode laser （ECDL） as a stablefrequency light source to stabilize two cw single-mode Ti：sapphire lasers for laser cooling of magnesium fluoride molecules. An ECDL based on the Littman configuration is constructed and stabilized by a digital signal processor system. We stabilize the frequency of our ECDL to 4-0.77 MHz precision over 10 h and the Allan standard deviation reaches 2.6 × 10-11 at an integration time of 10 s. We lock two Ti：sapphire lasers through a transfer cavity, and either laser has a long-term frequency stability of 4-2.5 MHz.

关 键 词：Digital signal processors Laser resonators Light sources MOLECULES SAPPHIRE Semiconductor lasers Signal processing Spectroscopic analysis 

分 类 号：TN248.4[电子电信—物理电子学] O562[理学—原子与分子物理]