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Proceedings Paper

Nanometer-scale resonant cavities
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Paper Abstract

Cavity enhanced directional resonance has been experimentally observed in single optically-trapped polystyrene particles, which have a size range from 9 μm down to several hundred nm. The higher resonance peaks correspond to longitudinal modes of the directional laser oscillation in a deformed spherical resonator. The lower peaks are attributed to whispering-gallery modes. For a particle with a diameter of approximately 9 μm, the longitudinal mode numbers of the resonator that is responsible for the observed sharp emission peaks are identified using a ray optics model. It is suggested that both directional and whispering-gallery modes can exist in nanometer-scale size resonators. The potential use of such resonant optical cavities in fiber-based optical sensors for chemical diagnostics is suggested. Considerable additional work is required to completely model and measure the observation of effects briefly summarized here.

Paper Details

Date Published: 23 March 2005
PDF: 5 pages
Proc. SPIE 5691, Optical Fibers and Sensors for Medical Applications V, (23 March 2005); doi: 10.1117/12.602111
Show Author Affiliations
Liangmin Zhang, Virginia Polytechnic Institute and State Univ. (United States)
Fajian Zhang, Virginia Polytechnic Institute and State Univ. (United States)
You-Xiong Wang, Virginia Polytechnic Institute and State Univ. (United States)
William B. Spillman, Jr., Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 5691:
Optical Fibers and Sensors for Medical Applications V
Israel Gannot, Editor(s)

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