Modified Fizeau interferometer with the polynomial and FFT smoothing algorithm

Ilya Galaktionov; Julia Sheldakova; Vladimir Toporovsky; Alexis Kudryashov

doi:10.1117/12.2632181

3 October 2022 Modified Fizeau interferometer with the polynomial and FFT smoothing algorithm

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12223, Interferometry XXI; 122230T (2022) https://doi.org/10.1117/12.2632181
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

The modified Fizeau interferometer that allows to diagnose plane and spherical optical elements with the diameter ranging from 10 to 100 mm is discussed. The modified method of interference patterns reconstruction based on reference lines is described. Two algorithms — the algorithm of 4th order polynomial smoothing and the algorithm of fast Fourier transform are implemented. The modified method allowed to increase the reliability of interferometric pattern reconstruction and suppress the influence of incoming noise. Accuracy of the measurements is about λ/10 (λ=0.63 um).

Conference Presentation

Citation Download Citation

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, and Alexis Kudryashov "Modified Fizeau interferometer with the polynomial and FFT smoothing algorithm", Proc. SPIE 12223, Interferometry XXI, 122230T (3 October 2022); https://doi.org/10.1117/12.2632181

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