单口径片状放大器光束波前畸变热恢复研究

Investigation of Thermal Recovery of Wavefront Distortion of the Single-segment Amplifier

给出了在单口径片状放大器 (SSA)实验平台上利用哈特曼波前传感器进行热恢复研究的实验结果。结果表明 ,三片长的SSA双程最大热波前畸变约为 1 1λ峰谷 (P V)和 0 .13λ均方根梯度 (RMS) (λ =6 32 8nm)。实验结果与模拟计算结果进行了相互校核 ,两者符合得较好。

The experimental results of the thermal recovery of the wavefront distortion using the single segment amplifier (SSA) test bed and the Hatamann wavefront sensor are reported. The results indicate that the largest values of peak to valley and RMS of the optical wavefront are 1.1λ and 0.13λ (λ=632.8 nm), respectively. The experimental results agree well with the numerical simulations.