Determination of refractive index of transparent plate by Fabry-Perot fringe analysis

Hee Joo Choi; Hwan Hong Lim; Han Seb Moon; Tae Bong Eom; Jung J. Ju; Myoungsik Cha

doi:10.1117/12.862363

2 August 2010 Determination of refractive index of transparent plate by Fabry-Perot fringe analysis

Hee Joo Choi, Hwan Hong Lim, Han Seb Moon, Tae Bong Eom, Jung J. Ju, Myoungsik Cha

Proceedings Volume 7790, Interferometry XV: Techniques and Analysis; 77900Z (2010) https://doi.org/10.1117/12.862363
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

We developed a simple and accurate method for measuring the refractive indices of transparent plates by analyzing the transmitted fringe pattern as a function of angle of incidence. By using two different wavelengths, we resolved the 2π- ambiguity inherent to the phase measurement involving a thick medium, leading to independent determination of the absolute index of refraction and the thickness with a relative uncertainty smaller than 10^-5 for a 1 mm-thick fused silica plate. The accuracy of our method was confirmed with a standard reference material.

Citation Download Citation

Hee Joo Choi, Hwan Hong Lim, Han Seb Moon, Tae Bong Eom, Jung J. Ju, and Myoungsik Cha "Determination of refractive index of transparent plate by Fabry-Perot fringe analysis", Proc. SPIE 7790, Interferometry XV: Techniques and Analysis, 77900Z (2 August 2010); https://doi.org/10.1117/12.862363

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