Chinese Optics Letters, 2016, 14 (5): 051403, Published Online: Aug. 6, 2018
Compact phase-lock loop for external cavity diode lasers Download: 985次
140.0140 Lasers and laser optics 140.3518 Lasers, frequency modulated 250.4745 Optical processing devices
Abstract
We present a compact, low-noise, and inexpensive optical phase-lock loop (OPLL) system to synchronize the frequency and the phase between two external cavity diode lasers. Based on a direct digital synthesizer technique, a programmable radio-frequency generator is implemented as the reference signal source. The OPLL has a narrow beat note linewidth below 1 Hz and a residual mean-square phase error of 0.06 rad 2 in a 10 MHz integration bandwidth. The experimental test results prove the competent performance of the system, which is promising as a low-budget choice in atomic physics applications.
Chunhua Wei, Shuhua Yan, Aiai Jia, Yukun Luo, Qingqing Hu, Zehuan Li. Compact phase-lock loop for external cavity diode lasers[J]. Chinese Optics Letters, 2016, 14(5): 051403.