Nanometer-scale resonant cavities

Liangmin Zhang; Fajian Zhang; You-Xiong Wang; William B. Spillman, Jr.; Richard O. Claus

doi:10.1117/12.602111

23 March 2005 Nanometer-scale resonant cavities

Liangmin Zhang, Fajian Zhang, You-Xiong Wang, William B. Spillman, Jr., Richard O. Claus

Proceedings Volume 5691, Optical Fibers and Sensors for Medical Applications V; (2005) https://doi.org/10.1117/12.602111
Event: SPIE BiOS, 2005, San Jose, CA, United States

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.

Citation Download Citation

Liangmin Zhang, Fajian Zhang, You-Xiong Wang, William B. Spillman, Jr., and Richard O. Claus "Nanometer-scale resonant cavities", Proc. SPIE 5691, Optical Fibers and Sensors for Medical Applications V, (23 March 2005); https://doi.org/10.1117/12.602111

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