Estimation technique of global fringe contrast using in interferometers with adjustable contrast

Fuzhong Bai; Jiayi Chen; Ping Li; Xiaojuan Gao; Tieying Zhang

doi:10.1117/12.2591102

28 February 2021 Estimation technique of global fringe contrast using in interferometers with adjustable contrast

Fuzhong Bai, Jiayi Chen, Ping Li, Xiaojuan Gao, Tieying Zhang

Proceedings Volume 11781, 4th Optics Young Scientist Summit (OYSS 2020); 1178115 (2021) https://doi.org/10.1117/12.2591102
Event: Optics Frontier: Optics Young Scientist Summit, 2020, Ningbo, China

Abstract

In the accuracy measurement of phase from interferometers with adjustable fringe contrast, it needs to estimate the contrast of experimental patterns so as to obtain the interference patterns with the maximum contrast. We develop the Fourier-polar transform and combine the directional projection to estimate the global contrast of carrier fringe pattern. The technique is especially used for low-quality fringe pattern such as low contrast and low signal to noise ratio (SNR) that often appear in the interferometric experiment. An illustrative experiment based on the radial shearing interferometer is given. Results generated from this technique are compared with the derived values from theoretical model, and exemplary agreement between both is demonstrated.

Citation Download Citation

Fuzhong Bai, Jiayi Chen, Ping Li, Xiaojuan Gao, and Tieying Zhang "Estimation technique of global fringe contrast using in interferometers with adjustable contrast", Proc. SPIE 11781, 4th Optics Young Scientist Summit (OYSS 2020), 1178115 (28 February 2021); https://doi.org/10.1117/12.2591102

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