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DOI: 10.17586/1023-5086-2018-85-05-13-18
An iterative algorithm for beam complex amplitude reconstruction by radial shearing interferometry
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Publication in Journal of Optical Technology
Y. Du, H. Wang, P. Liu, Y. Fu An iterative algorithm for beam complex amplitude reconstruction by radial shearing interferometry (Итерационный алгоритм восстановления комплексной амплитуды пучка в интерферометрии радиального сдвига) [на англ. яз.] // Оптический журнал. 2018. Т. 85. № 5. С. 13–18. http://doi.org/10.17586/1023-5086-2018-85-05-13-18
Y. Du, H. Wang, P. Liu, Y. Fu An iterative algorithm for beam complex amplitude reconstruction by radial shearing interferometry (Итерационный алгоритм восстановления комплексной амплитуды пучка в интерферометрии радиального сдвига) [in English] // Opticheskii Zhurnal. 2018. V. 85. № 5. P. 13–18. http://doi.org/10.17586/1023-5086-2018-85-05-13-18
Y. Du, H. Wang, P. Liu, and Y. Fu, "Iterative algorithm for beam complex amplitude reconstruction by radial shearing interferometry," Journal of Optical Technology. 85(5), 264-268 (2018). https://doi.org/10.1364/JOT.85.000264
An iterative algorithm for precisely reconstructing complex amplitude of laser beam based on radial shearing interferometer is proposed. Firstly, the complex amplitude of modulation function which includes the test beam’s information is obtained from a cyclic radial shearing interferogram by Fourier filtering method. Then the complex amplitude of modulation function is used to estimate the complex amplitude of the laser output with a successive iterative process. The simulations and real experimental results showed the performance of the proposed iteration method of beam complex amplitude reconstruction.
laser beam characterization, complex amplitude reconstruction, cyclic radial shearing interferometer, iterative algorithm
Acknowledgements:This work was supported by the grants from Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University (No.ZQN-PY518), National Natural Science Foundation of China (No.61605048,11474233), Natural Science Foundation of Fujian Province, China (No.2016J01300, 2018J05105), Scientific Research Funds of Huaqiao University (No.15BS413), and the Young and Middle-aged Teachers Education Scientific Research Project of Fujian Province, China (No. JAT160020).
OCIS codes: 140.0140, 140.3295, 120.4640, 120.3180
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