LAUSR

Abstract In order to study the stability of corner cube prism solid-state laser under the effect of thermal lens, the resonant equivalence cavity, resonant G-parameter and auxiliary parameter theories were used to model the corner cube prism solid-state lasers containing a thermal lens. The laser stability with resonant cavity length was analyzed. In a stable condition, the beam radius was analyzed with regards to the distance from one of the corner cube prisms to gain medium by calculating the beam radius at each position under the resonator G-parameter theory. On this basis, a V-structured solid-state laser, pumped by a semiconductor laser and two corner cube prisms as a resonant, was built. In consideration of the effect of thermal lens produced by the pumped beam, the experimental measurements of the beam radius at two corner cube prisms and the gain medium were made for the resonant cavity length during stable condition of the laser. The experimental measurements agreed well with the simulation results, and showed that the maximum cavity length depended on thermal lens focal length of the gain medium, variation pattern in the beam radius at the corner cube prism, relationship between cavity length and the beam radius.