Study on Phase-Locked Coherence of Evanescent Wave Coupling in Solid-State Laser

The mechanism and characteristics of evanescent-wave coupling in solid-state laser is analyzed theoretically and experimentally. The results shown that self-organized phase locking between laser modes can be realized by evanescent wave coupling in solid-state laser. Based on "mutual injection and evanescent wave" characteristics of corner-cube prism, the paper reveals that far-field output of corner-cube laser is the inner reason and mechanism of coherent combining distribution by theory of evanescent wave and its coherence is better than plane parallel resonator. And "mutually coupled phase locking of six lasers based cube-corner resonator" scheme is proposed on this basis.