Chinese Academy of Sciences

Hefei National Laboratory

Hong Chang

A dual frequency laser for a dual mode optical lattice atomic clock is provided, which includes a 532 nm pump laser source, a beam splitter set, a dichroic mirror, a titanium sapphire crystal, a birefringent crystal, an electro-optic crystal, a concave reflector and a PZT. The dichroic mirror and the concave reflector form a first resonant cavity configured to generate a laser; the beam splitter set is configured to split a collimated pump beam into two spatially separated pump beams; an optical axis of the birefringent crystal generates propagation paths for ordinary ray and extraordinary ray within the same cavity to form two eigen modes; the electro-optic crystal is configured to add an electric field externally in a direction parallel to an electric vector of the ordinary ray or the extraordinary ray; and the PZT is combined with the electro-optic crystal to regulate two laser frequencies simultaneously.

Growing community of inventors

Xi'an, China

Hong Chang