Refractive index determination of highly absorbing materials by oblique transmittance measurements

Celia Sánchez Pérez; Augusto García Valenzuela; Luis Castañeda Aviña; G. Eduardo Sandoval Romero

doi:10.1117/12.674601

10 February 2006 Refractive index determination of highly absorbing materials by oblique transmittance measurements

Celia Sánchez Pérez, Augusto García Valenzuela, Luis Castañeda Aviña, G. Eduardo Sandoval Romero

Proceedings Volume 6046, Fifth Symposium Optics in Industry; 60461V (2006) https://doi.org/10.1117/12.674601
Event: Fifth Symposium Optics in Industry, 2005, Santiago De Queretaro, Mexico

Abstract

We propose a simple technique for determining the refractive indices of highly absorbing materials. This method uses two transmittance measurements at oblique incidence. A theoretical analysis of the proposed method is presented. The refractive index of water was experimentally determined with a relative error ranging from 0.12% to 1.3%. We discuss the extension of this method to spectroscopic measurements.

Citation Download Citation

Celia Sánchez Pérez, Augusto García Valenzuela, Luis Castañeda Aviña, and G. Eduardo Sandoval Romero "Refractive index determination of highly absorbing materials by oblique transmittance measurements", Proc. SPIE 6046, Fifth Symposium Optics in Industry, 60461V (10 February 2006); https://doi.org/10.1117/12.674601

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