LIU Jie1,2, RUAN Jun1,2, MA Jie1, ZHANG Shou-gang1

(1. National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, China;

2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China) 

Abstract: To drive a home-made 852 nm external cavity semiconductor diode laser(ECDL), an electronic system of ECDL with low frequency drift is designed. The laser diode is regulated by a temperature controller and a stabilized constant current source. And the external cavity length is regulated by another temperature controller and a constant voltage source with high voltage. By designing the driving circuits and choosing the components, the frequency drift of the ECDL is reduced to 15 MHz/h according to the test results.

Key words:external cavity semiconductor diode laser; circuit driving system; frequency drift of the laser