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Iterative phase-retrieval method for generating stereo array of polarization-controlled focal spots

Shangting You, Cuifang Kuang, Kimani C. Toussaint, Renjie Zhou, Xinxing Xia, and Xu Liu

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Abstract

This Letter introduces an iterative phase-retrieval method based on the Gerchberg–Saxton (G-S) algorithm for generating any arbitrary 3D pattern in image space, while simultaneously controlling the polarization orientation at each pixel. For proof-of-principle, we generate a stereo focal spot array with distinct polarization orientation for each spot. This method is universal for controlling the output polarization; the only requirement is that the input polarization should be spatially inhomogeneous. This work has the potential to impact coherent imaging techniques and spectroscopy.

© 2015 Optical Society of America

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