REVIEW OF SCIENTIFIC INSTRUMENTS 87, 056105 (2016)
Yingxin Luo, 1 Hongyin Li, 1,2 and Hsien-Chi Yeh 1,a)
1 MOE Key Laboratory of Fundamental Quantities Measurement, School of Physics, Huazhong University
of Science and Technology, Wuhan 430074, People’s Republic of China
2 School of Automation, Huazhong University of Science and Technology, Wuhan 430074,
People’s Republic of China
(Received 17 August 2015; accepted 4 May 2016; published online 18 May 2016)
We present a prototype of a laser frequency auto-locking and re-locking control system designed for laser frequency stabilization in inter-satellite laser ranging system. The controller has been
implemented on field programmable gate arrays and programmed with LabVIEW software. The controller allows initial frequency calibrating and lock-in of a free-running laser to a Fabry-Pérot
cavity. Since it allows automatic recovery from unlocked conditions, benefit derives to automated in-orbit operations. Program design and experimental results are demonstrated. Published by AIP Publishing. [http://dx.doi.org/10.1063/1.4950862]
