Experimental study on mutual injection locked Vertical-Cavity Surface-Emitting Lasers

Recently we propose a lin⊥lin quasi-bichromatic laser scheme and experimentally realized the device. Through modulating two Vertical-Cavity Surface-Emitting Lasers (VCSELs) with same microwave and mutually injecting between two VCSELs, a lin ⊥ lin quasi-bichromatic laser with the 90% laser power on the two wanted frequency components is obtained. With the laser source the high quality CPT signal has been obtained. We also introduce the scheme which is promising to provide a lin ⊥ lin quasi-bichromatic laser source for the miniature CPT atomic clock.