摘要
A compact extended cavity diode laser （ECDL） system operating at 852 nm for small optically pumped cesium （Cs） beam frequency standards was reported. ECDL and a saturated absorption spectroscopy setup were all built in an aluminum box with dimension of 10 × 10 × 7 （cm）. ECDL was based on a Littman-Metcaff configuration, whose free-running linewidth was less than 600 kHz. A digital automatic frequency lock unit （AFLU） was developed to lock the laser frequency to specify Cs absorption lines automatically and re-lock it in case of lock broken. With AFLU, the laser frequency was continuously locked for several weeks.
A compact extended cavity diode laser （ECDL） system operating at 852 nm for small optically pumped cesium （Cs） beam frequency standards was reported. ECDL and a saturated absorption spectroscopy setup were all built in an aluminum box with dimension of 10 × 10 × 7 （cm）. ECDL was based on a Littman-Metcaff configuration, whose free-running linewidth was less than 600 kHz. A digital automatic frequency lock unit （AFLU） was developed to lock the laser frequency to specify Cs absorption lines automatically and re-lock it in case of lock broken. With AFLU, the laser frequency was continuously locked for several weeks.
作者简介
J. Zhang＇s e-mail address is jwzhang@pku.edu.cn.D. Yang is the author to whom the correspondence should be addressed, his e-mail address is dhyang@pku.edu.cn.
