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Proceedings Paper

Interferometric measurement of thermo-optic coefficients of transparent materials
Author(s): Sergio De Nicola; Andrea Finizio; Pietro Ferraro; Giovanni Pierattini
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Paper Abstract

We describe an interferometric technique based on temperature dependent optical path length changes in thin slab of transparent materials, suitable for measuring the thermo-optic coefficients of transparent materials. This technique allows an accurate determination of the fringe shift corresponding to a change in the sample temperature, by means of a two fringe pattern Fourier-transform based processing algorithm for phase retrieval. The principle of measurement of the method and its applications to the measurements of the thermo-optic coefficients of some commercial glasses are presented and discussed.

Paper Details

Date Published: 29 December 1999
PDF: 5 pages
Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); doi: 10.1117/12.373648
Show Author Affiliations
Sergio De Nicola, Istituto di Cibernetica (Italy)
Andrea Finizio, Istituto di Cibernetica (Italy)
Pietro Ferraro, Istituto di Cibernetica and Istituto Tecnico Industriale Statale (Italy)
Giovanni Pierattini, Istituto di Cibernetica (Italy)


Published in SPIE Proceedings Vol. 4016:
Photonics, Devices, and Systems
Miroslav Hrabovsky; Pavel Tomanek; Miroslav Miler, Editor(s)

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