Refractive index determination of highly absorbing materials by oblique transmittance measurements

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

Research output: Contribution to journalConference articlepeer-review

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.

Original languageEnglish
Article number60461V
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6046
DOIs
StatePublished - 2006
Externally publishedYes
EventFifth Symposium Optics in Industry - Santiago de Queretaro, Mexico
Duration: 8 Sep 20059 Sep 2005

Keywords

  • Absorbing materials
  • Oblique incidence
  • Refractive index
  • Transmittance measurement

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