supported by the National Key Research and Development Program of China(Nos.2021YFC2201800 and 2020YFC2200300);the National Natural Science Foundation of China(Nos.11327407,11654004,and 11235004);the Strategic Priority Research Program of the Chinese Academy of Sciences(Nos.XDB21010300 and XDB23030202)。
Ultrastable continuous-wave lasers are one of the important elements for space-based gravitational wave detection.Here we present a Pound–Drever–Hall laser frequency-locked system based on a field-programmable gate ...