Interferometric measurement of thermo-optic coefficients of transparent materials

Sergio De Nicola; Andrea Finizio; Pietro Ferraro; Giovanni Pierattini

doi:10.1117/12.373648

29 December 1999 Interferometric measurement of thermo-optic coefficients of transparent materials

Sergio De Nicola, Andrea Finizio, Pietro Ferraro, Giovanni Pierattini

Proceedings Volume 4016, Photonics, Devices, and Systems; (1999) https://doi.org/10.1117/12.373648
Event: Photonics Prague '99, 1999, Prague, Czech Republic

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.

Citation Download Citation

Sergio De Nicola, Andrea Finizio, Pietro Ferraro, and Giovanni Pierattini "Interferometric measurement of thermo-optic coefficients of transparent materials", Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); https://doi.org/10.1117/12.373648

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