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Proceedings Paper

White-light interferometry with the equalization wavelength determination used to measure group velocity dispersion in optical samples
Author(s): Petr Hlubina
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Paper Abstract

A new white-light spectral-domain interferometric technique is used to measure the group velocity dispersion (GVD) in optical samples of known thicknesses. In the experimental setup comprising a halogen lamp, a Michelson interferometer with an optical sample, and a low-resolution spectrometer, the equalization wavelength as a function of the displacement of the interferometer mirror is measured by the spectrometer. From the measured equalization wavelengths either the differential group refractive index of the optical sample as a function of the equalization wavelength or the difference of the mirror displacements at two different equalization wavelengths is obtained to determine the GVD in the optical sample. The new white-light spectral-domain interferometric technique is applied to measure the GVD in two fused-silica optical samples of known thicknesses. In a broad spectral range it is confirmed that the GVD in both samples agrees well with the GVD resulting from the Sellmeier dispersion equation.

Paper Details

Date Published: 8 July 2003
PDF: 6 pages
Proc. SPIE 5036, Photonics, Devices, and Systems II, (8 July 2003); doi: 10.1117/12.498334
Show Author Affiliations
Petr Hlubina, Silesian Univ. Opava (Czech Republic)


Published in SPIE Proceedings Vol. 5036:
Photonics, Devices, and Systems II
Miroslav Hrabovsky; Dagmar Senderakova; Pavel Tomanek, Editor(s)

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