Refractive index inhomogeneity measurement of a parallel plate in a Fizeau interferometer by a new wavelength scanning algorithm

Kenichi Hibino; Bozenko F. Oreb; Philip S. Fairman

doi:10.1117/12.530070

19 November 2003 Refractive index inhomogeneity measurement of a parallel plate in a Fizeau interferometer by a new wavelength scanning algorithm

Kenichi Hibino, Bozenko F. Oreb, Philip S. Fairman

Author Affiliations +

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.530070
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

Interferometric measurement of the refractive index inhomogeneity of a glass parallel plate has been demonstrated experimentally to a resolution of 10^-6. Wavelength scanning interferometry allows the simultaneous measurement of optical thickness and surface shape of a parallel optical plate. A new sampling function suppresses the first-order refractive index dispersion and multiple-beam interference noise to give a measurement resolution of 2 nm in optical thickness.

Citation Download Citation

Kenichi Hibino, Bozenko F. Oreb, and Philip S. Fairman "Refractive index inhomogeneity measurement of a parallel plate in a Fizeau interferometer by a new wavelength scanning algorithm", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.530070

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