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Proceedings Paper

Spectral interference between two beams in a Michelson interferometer and modulation of the spectrum of a low-coherence source
Author(s): Petr Hlubina
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Paper Abstract

The mutual interference of two beams in the spectral domain has been demonstrated experimentally at the output of a Michelson interferometer excited by two low-coherence sources which differ substantially from each other by the width of the spectrum, and whose coherence lengths are shorter than the optical path difference (OPD) between both beams. The spectral interference between two beams, which shows up for the first source the wavelength-independent and for the second source the wavelength-dependent periodic modulation of the source spectrum, serves as an illustration of the feasibility of an experimental method utilizing a high-resolution spectrometer in the evaluation of the group OPDs and displacements in a range dependent on the source spectral width. A cross- correlation procedure between the experimental and theoretical spectral modulations has been applied in the estimate of the group OPDs as well as in the evaluation of their wavelength dependence affected by dispersion of the beamsplitter. Moreover, good agreement between theoretical description of two-beam spectral inference experiment and the measured spectral modulation has been confirmed and the effect of both the spatial and the spectral integration has been resolved.

Paper Details

Date Published: 1 January 1998
PDF: 8 pages
Proc. SPIE 3320, Tenth Polish-Czech-Slovak Optical Conference: Wave and Quantum Aspects of Contemporary Optics, (1 January 1998); doi: 10.1117/12.301327
Show Author Affiliations
Petr Hlubina, Silesian Univ./Opava (Czech Republic)

Published in SPIE Proceedings Vol. 3320:
Tenth Polish-Czech-Slovak Optical Conference: Wave and Quantum Aspects of Contemporary Optics
Jerzy Nowak; Marek Zajac, Editor(s)

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