Chinese Optics Letters, 2018, 16 (1): 010607, Published Online: Jul. 17, 2018
fs-level laser–RF synchronization with a fiber-loop optical-microwave phase detector 
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Abstract
In order to improve the precision of the laser–radio-frequency (RF) synchronization system from sub-picosecond to femtosecond (fs), a synchronization system between a picosecond laser and a 1.3 GHz RF generator has been developed based on a fiber-loop optical-microwave phase detector (FLOM-PD). Synchronization with fs-level (3.8 fs) rms jitter, integrated from 10 Hz to 1 MHz, is achieved for the first time, to the best of our knowledge, in this kind of configuration. This system will be used for the superconducting RF accelerator at Peking University.
Shangyu Si, Liwen Feng, Yanying Zha, Gang Zhao, Fangming Liu, Senlin Huang, Kexin Liu. fs-level laser–RF synchronization with a fiber-loop optical-microwave phase detector[J]. Chinese Optics Letters, 2018, 16(1): 010607.
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