Fresnel filtering of Gaussian beams in microcavities

Susumu Shinohara*, Takahisa Harayama, Takehiro Fukushima

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We study the output from the modes described by the superposition of Gaussian beams confined in the quasistadium microcavities. We experimentally observe the deviation from Snell's law in the output when the incident angle of the Gaussian beam at the cavity interface is near the critical angle for total internal reflection, providing direct experimental evidence on the Fresnel filtering. The theory of the Fresnel filtering for a planar interface qualitatively reproduces experimental data, and a discussion is given on small deviation between the measured data and the theory.

Original languageEnglish
Pages (from-to)1023-1025
Number of pages3
JournalOptics Letters
Issue number6
Publication statusPublished - 2011 Mar 15
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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