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Opt Express. 2007 Apr 16;15(8):4869-75.

High-Q optical whispering gallery modes in elliptical LiNbO(3) resonant cavities.

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1
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA. makan.mohageg@jpl.nasa.gov

Abstract

We have experimentally demonstrated the existence of optical whispering-gallery-modes (WGMs) with quality factors in excess of 10(8) in elliptical cavities fabricated with LiNbO(3). The efficiency of evanescent coupling to the modes through a diamond prism was as high as 97.3%. This is the best value ever achieved for evanescent coupling to a WGM resonator using a prism. The free spectral ranges of the WGMs are successfully modeled using an eikonal approximation.

PMID:
19532734
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