Compact phase-lock loop for external cavity diode lasers Chunhua Wei, Chunhua Wei ; Shuhua Yan, Shuhua Yan ; Aiai Jia, Aiai Jia ; Yukun Luo, Yukun Luo ; Qingqing Hu, Qingqing Hu ; Zehuan Li ; Zehuan Li Abstract Publication: Chinese Optics Letters Pub Date: 2016 DOI: 10.3788/COL201614.051403 Bibcode: 2016ChOpL..14e1403C