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Performance of a woofer-tweeter deformable mirror control architecture for high-bandwidth, high-spatial resolution adaptive optics

机译:高带宽,高空间分辨率自适应光学元件的低音高音可变形镜面控制架构的性能

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摘要

To compensate for large phase errors at high bandwidth, a dual deformable mirror (DM) architecture is introduced. One DM (the tweeter) handles the high spatial resolution errors with a small stroke, high bandwidth, capability while the other DM (the woofer) corrects the larger but more slowly varying phase errors with a larger stroke capability. An offload control architecture is shown to be very effective with the Kolmogorov turbulence spectrum. The architecture is also shown to be effective when used with a self-referencing interferomenter (SRI) wavefront sensor and an exponential control law for phase unwrapping. Performance is verified in simulation and in an advanced wavefront control testbed facility at the Air Force Research Laboratory.
机译:为了补偿高带宽下的大相位误差,引入了双可变形镜(DM)架构。一个DM(高音扬声器)以较小的行程,高带宽和能力来处理高空间分辨率误差,而另一个DM(低音扬声器)以较大的行程能力来校正较大但变化较慢的相位误差。卸载控制架构对Kolmogorov湍流谱非常有效。与自参考干扰素(SRI)波前传感器和用于相位展开的指数控制律一起使用时,该体系结构也被证明是有效的。在空军研究实验室的仿真和先进的波前控制测试平台中,性能得到了验证。

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