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利用高空间分辨率的哈特曼波前传感器实验研究了新型阵列式大口径片状放大器的光束波前畸变特性。哈特曼波前传感器的微透镜阵列数为 3 2× 3 2 ,放大器的通光口径为 2 9cm× 2 9cm。在充电电压为 2 0kV、泵浦能密度为 7.2 8J/cm3的条件下 ,得到了放大器端部模块全口径范围内光束波前双程畸变量为 :P -V值为 1.613λ ,RMS值为 0 .3 99λ(λ=1.0 5 3 μm) ,并对实验结果进行了分析和讨论。
The Hartford wavefront sensor with high spatial resolution was used to experimentally study the wavefront distortion characteristics of the new array large-aperture chip amplifier. The Hartmann wavefront sensor has a microlens array of 32 × 3 2 and a clear aperture of the amplifier of 29 cm × 29 cm. Under the conditions of charging voltage of 20 kV and pumping energy density of 7.2 8 J / cm3, the two-way distortion of the beam front wave in the full aperture of the amplifier module is obtained as P -V 1.613λ and RMS 0 .3 99λ (λ = 1.05 3 μm), and the experimental results were analyzed and discussed.