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Optical Engineering

Lucky interferometry for displacement measurement
Author(s): Bogdan Flo Ionita; Petre-Catalin C. Logofatu; Dan Apostol
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Paper Abstract

We extrapolated the lucky imaging technique, mostly used in astronomy, to the field of interferometry for displacement measurement. From the batch of interferograms generated by a Twyman-Green-type interferometer and acquired by a CCD camera, those with high overall contrast were selected and fitted to a sinusoidal function. The high-contrast interferograms showed a significantly lower dispersion and, consequently, a lower uncertainty of the measured displacement.

Paper Details

Date Published: 1 November 2009
PDF: 6 pages
Opt. Eng. 48(11) 115602 doi: 10.1117/1.3264960
Published in: Optical Engineering Volume 48, Issue 11
Show Author Affiliations
Bogdan Flo Ionita, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Petre-Catalin C. Logofatu, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Dan Apostol, Institutul National pentru Fizica Laserilor, Plasmei si Radiatiei (Romania)

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