25 November 1986 Comparison Of Harmonic Weighting, Fitting, And Crossing Points For Locating Optical Interference Fringes
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Proceedings Volume 0661, Optical Testing and Metrology; (1986) https://doi.org/10.1117/12.938599
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada
Abstract
The problem in precisely locating a fringe in an interference pattern is that the light intensity varies so gradually in the regions of the maxima and minima. Such devices as logarithmic weighting and half-shades have been used in the past. Here, the methods of fitting the fringe intensity profile, harmonic weighting (which converts the fringe profile into a sawtooth), and using the mid-intensity crossing points (where the intensity varies most steeply) are compared, and their precisions in the presence of statistical errors are described. The implications for practical measurement are discussed.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William Primak, William Primak, "Comparison Of Harmonic Weighting, Fitting, And Crossing Points For Locating Optical Interference Fringes", Proc. SPIE 0661, Optical Testing and Metrology, (25 November 1986); doi: 10.1117/12.938599; https://doi.org/10.1117/12.938599
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