Phase retrieval from subdivision of the focal plane with a lenslet array.
Phase retrieval from subdivision of the focal plane with a lenslet array.
复制标题
使用小透镜阵列对焦平面进行细分进行相位检索。
作者：
R. Clare;R. Lane
提出了一种基于焦平面复场细分的相位恢复算法。这种细分是以类似于金字塔波前传感器的方式在焦平面处用小透镜阵列实现的。相位恢复算法显着提高了波前估计，可以获得作为孔径图像的线性组合。该相位恢复算法还避免了相位恢复和与Shack-Hartmann传感器结合的相位恢复中固有的双图像停滞问题。
A phase retrieval algorithm derived from subdivision of the complex field at the focal plane is proposed. This subdivision is achieved with a lenslet array at the focal plane in a manner similar to the pyramid wave-front sensor. The phase retrieval algorithm significantly improves the wave-front estimate that can be attained as a linear combination of the aperture images. This phase retrieval algorithm also avoids the twin-image stagnation problem inherent in phase retrieval and phase retrieval in conjunction with the Shack-Hartmann sensor.