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Optical Engineering

Laser Unequal Path Interferometer Configurations By Grating Splitting At The Fourier Plane
Author(s): G. Molesini; G. Pedrini; F. Quercioli
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Paper Abstract

Simple interferometric configurations are considered in which the beam splitter is made of a diffraction grating placed at the Fourier plane of the source system. Under coherent illumination, interference patterns are produced that account for the phase difference between the source wavefront and the back-reflected probe wavefront. A practical laser unequal path interferome-ter (LUPI) setup is presented, along with calibration results from comparison with well-established interferometric configurations.

Paper Details

Date Published: 1 October 1984
PDF: 4 pages
Opt. Eng. 23(5) 235646 doi: 10.1117/12.7973349
Published in: Optical Engineering Volume 23, Issue 5
Show Author Affiliations
G. Molesini, Istituto Nazionale di Ottica (Italy)
G. Pedrini, Istituto Nazionale di Ottica (Italy)
F. Quercioli, Istituto Nazionale di Ottica (Italy)

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