Simple direct extraction of unknown phase shift and wavefront reconstruction in generalized phase-shifting interferometry: algorithm and experiments |
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Authors: | Xu X F Cai L Z Wang Y R Meng X F Sun W J Zhang H Cheng X C Dong G Y Shen X X |
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Institution: | Department of Optics, Shandong University, Jinan 250100, China. |
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Abstract: | An algorithm to extract the arbitrary unknown phase shift and then reconstruct the complex object wave in generalized phase-shifting interferometry (GPSI) without the iteration process and measurement of object wave intensity is proposed. This method can be used for GPSI of any frame number >or=2. Both computer simulations with smooth and diffusing object surfaces and optical experiments have verified the effectiveness of this method over a wide range of phase shifts with very satisfactory results. |
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