Ultrahigh precision synchronization of optical and microwave frequency sources

[摘要] In this paper we demonstrate that balanced optical-microwave phase detectors (BOMPD) are able to provide a robust long-term optical-RF synchronization with subfemtosecond residual timing drift over 24 hours in laboratory conditions without active temperature control of optical and electronic paths. Moreover, 10.833 GHz Sapphire-loaded cavity oscillator (SLCO) was successfully disciplined by 216.66 MHz laser oscillator using the BOMPD which resulted in a sub-femtosecond RMS jitter integrated from 1 Hz to 1 MHz.

[发布机构] Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Hamburg; D-22607, Germany^1;Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge; MA; 02139, United States^2;Department of Physics, University of Hamburg, Hamburg Center for Ultrafast Imaging, Hamburg; D-22761, Germany^3

[关键词] Active temperature control;Electronic paths;Laboratory conditions;Laser oscillators;Optical microwaves;Phase detectors;Sapphire loaded cavities;Ultrahigh precision