Statistical processing of Newton's rings using discrete Fourier analysis

Victor Nascov; Dan Apostol; Florin Garoi

doi:10.1117/1.2709856

1 February 2007 Statistical processing of Newton's rings using discrete Fourier analysis

Victor Nascov, Dan Apostol, Florin Garoi

Author Affiliations +

Optical Engineering, Vol. 46, Issue 2, 028201 (February 2007). https://doi.org/10.1117/1.2709856

Abstract

We present a practical numerical method for processing the fringes obtained when two waves, with a quadratic phase difference function, interfere. This kind of fringe includes straight equispaced fringes and Newton's rings as particular cases. The numerical method we present is based on the discrete Fresnel (Fourier) transform of the data and has the same precision as least square fitting (LSF). Compared to the LSF method, this new method is better, as it is more efficient and does not require initial approximations for the fringe parameters to be determined.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Victor Nascov, Dan Apostol, and Florin Garoi "Statistical processing of Newton's rings using discrete Fourier analysis," Optical Engineering 46(2), 028201 (1 February 2007). https://doi.org/10.1117/1.2709856

Published: 1 February 2007

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