Laser unequal path interferometer configurations by grating splitting at the Fourier plane

Year: 1984

Authors: Molesini G., Pedrini G., Quercioli F.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: Simple interferometric configurations are considered in which the beam splitter is made of a diffraction rating 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 interferometer (LUPI) setup is presented, along with calibration results from comparison with well-established interferometric configurations.

Journal/Review: OPTICAL ENGINEERING

Volume: 23 (5)      Pages from: 646  to: 649

KeyWords: Laser unequal path interferometers; Grating beam splitter; Optical istruments grating; Diffraction grating; Grating Splitting interferometers
DOI: 10.1117/12.7973349

Citations: 6
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