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Optical Engineering

Statistical processing of Newton's rings using discrete Fourier analysis
Author(s): Victor Nascov; Dan Apostol; Florin Garoi
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Paper 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.

Paper Details

Date Published: 1 February 2007
PDF: 10 pages
Opt. Eng. 46(2) 028201 doi: 10.1117/1.2709856
Published in: Optical Engineering Volume 46, Issue 2
Show Author Affiliations
Victor Nascov, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Dan Apostol, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Florin Garoi, National Institute for Lasers, Plasma and Radiation Physics (Romania)


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