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Proceedings Paper

Improved method for measuring refractive index of a medium
Author(s): Der-Chin Su; JuYi Lee
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Paper Abstract

An improved method for measuring the refractive index of a medium is presented. First, the light coming form a circular heterodyne source is incident on the test medium. And, the reflected light passes through an analyzer with the transmission axis at a moderate azimuth angle. Then, the phase variation of the reflected light is measured by the heterodyne interferometric technique. Finally, substituting this phase variation into the equations derived from Fresnel's equations and Jones calculus, we can obtain the refractive index of the test medium.

Paper Details

Date Published: 30 June 1998
PDF: 8 pages
Proc. SPIE 3478, Laser Interferometry IX: Techniques and Analysis, (30 June 1998); doi: 10.1117/12.312943
Show Author Affiliations
Der-Chin Su, National Chiao Tung Univ. (Taiwan)
JuYi Lee, National Chiao Tung Univ. (Taiwan)


Published in SPIE Proceedings Vol. 3478:
Laser Interferometry IX: Techniques and Analysis
Malgorzata Kujawinska; Gordon M. Brown; Mitsuo Takeda, Editor(s)

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