角锥阵列改善固体热容激光器光束质量
Improvement of beam quality of heat capacity laser with a cube corner array
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摘要: 为改善光束远场质量，探索研究了角锥反射器的应用，利用角锥棱镜的准相位共轭特性，将角锥棱镜阵列作为热容激光器的后腔镜，抑制腔内波前畸变，并通过数值模拟计算对角锥阵列的单元边长进行优化设计。实验结果表明:角锥阵列对光束远场质量有明显的改善，当角锥阵列的单元边长为4 mm时，实现光束远场7倍衍射极限输出。Abstract: 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.
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