Phase retrieval for general phase diversity Based on Zernike decomposition and SPGD

Huizhen Yang; Yaoqiu Li

doi:10.1117/12.907000

22 November 2011 Phase retrieval for general phase diversity Based on Zernike decomposition and SPGD

Huizhen Yang, Yaoqiu Li

Proceedings Volume 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 81991B (2011) https://doi.org/10.1117/12.907000
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

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.

Citation Download Citation

Huizhen Yang and Yaoqiu Li "Phase retrieval for general phase diversity Based on Zernike decomposition and SPGD", Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 81991B (22 November 2011); https://doi.org/10.1117/12.907000

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