Dual-wavelength Laser System and Cavity Stabilization Scheme of Dual-Wavelength Active Optical Clock

We experimentally realize a dual-wavelength good-bad cavity active optical clock based on the Nd: YAG crystal and cesium cell, of which the 1064 nm output signal as well as the Cs 1470 nm clock signal share a same cavity, and work in good cavity and bad cavity regime, respectively. We measure the detailed characteristics of the output signals. To further suppress the residual cavity pulling effect, we propose a preliminary cavity stabilization scheme where two independent systems are built and their good cavity signals are locked to each other, thus realizing the locking of cavity length. This scheme can demonstrate the technical readiness for the cavity stabilized dual-wavelength active optical clock that the main cavity is stabilized to a super cavity through PDH technique.