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Proceedings Paper

Phase retrieval for general phase diversity Based on Zernike decomposition and SPGD
Author(s): Huizhen Yang; Yaoqiu Li
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Paper Abstract

The GPD (General Phase Diversity) wavefront sensor generalizes the classical PD (Phase Diversity) algorithm and has more extensive applications. To restore the phase from the output signal of the sensor, we first decompose the output signal by Zernike mode and then use SPGD (Stochastic Parallel Gradient Descent) to search the optimum solution. The performance of phase retrieval algorithm is analyzed through two different aberrated wavefronts. One is an initial shape of 32-element deformable mirror sampled by the interferometer; the other is generated through the method proposed by N. Roddier. Simulation results show the method we put forward can correctly retrieve the phase from the output signal of the GPD wavefront sensor for randomly generated distorted wavefronts and is highly adaptable to noise.

Paper Details

Date Published: 22 November 2011
PDF: 7 pages
Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 81991B (22 November 2011); doi: 10.1117/12.907000
Show Author Affiliations
Huizhen Yang, Huaihai Institute of Technology (China)
Yaoqiu Li, Huaihai Institute of Technology (China)


Published in SPIE Proceedings Vol. 8199:
2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Brian Culshaw; YanBiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan, Editor(s)

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