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Calibrating a high-resolution wavefront corrector with a static focal-plane camera

机译:使用静态焦平面相机校准高分辨率波前校正器

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We present a method to calibrate a high-resolution wavefront (WF)-correcting device with a single, static camera, located in the focal-plane; no moving of any component is needed. The method is based on a localized diversity and differential optical transfer functions to compute both the phase and amplitude in the pupil plane located upstream of the last imaging optics. An experiment with a spatial light modulator shows that the calibration is sufficient to robustly operate a focal-plane WF sensing algorithm controlling a WF corrector with 40,000 degrees of freedom. We estimate that the locations of identical WF corrector elements are determined with a spatial resolution of 0.3% compared to the pupil diameter.
机译:我们提出了一种使用位于焦平面的静态照相机来校准高分辨率波前(WF)校正设备的方法。无需移动任何组件。该方法基于局部分集和差分光学传递函数,以计算位于最后一个成像光学器件上游的光瞳平面中的相位和幅度。使用空间光调制器进行的实验表明,该校准足以稳固地操作以40,000个自由度控制WF校正器的焦平面WF感应算法。我们估计,与瞳孔直径相比,相同的WF校正器元素的位置以0.3%的空间分辨率确定。

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