Improvement of beam quality of heat capacity laser with a cube corner array

For improving the beam quality, the application of cube corners reflector was studied. The cube corners reflector was used as the cavity mirror, with use of the quasi-phase conjugation characteristics of the cube corners, the wave-front aberration of resonator cavity was restrained. The element side length of the cube corner array is optimized for the actual resonator configuration. The experimental results show that the cube corner array was effective in improving the far-field beam quality. When the element side length of the cube corner array is 4 mm, the far-field of laser output obtains the seven times diffraction limits.