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APS » Journals » Phys. Rev. Lett. » Volume 93 » Issue 10
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Phys. Rev. Lett. 93, 103903 (2004) [4 pages]

Whispering Gallery Modes in Nanosized Dielectric Resonators with Hexagonal Cross Section

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Thomas Nobis*, Evgeni M. Kaidashev†, Andreas Rahm, Michael Lorenz, and Marius Grundmann
Fakultät für Physik und Geowissenschaften, Institut für Experimentelle Physik II, Universität Leipzig, Linnéstraße 5, D-04103 Leipzig, Germany

Received 12 May 2004; published 3 September 2004

See accompanying Physics Focus

The size dependence of whispering gallery modes in dielectric resonators with hexagonal cross section has been observed within the visible spectral range for cavity diameters comparable to the light wavelength. As a model system single, tapered, high aspect ratio zinc oxide nanoneedles were analyzed. They enable systematic investigations as a function of the resonator diameter down to the nanometer regime. A simple plane wave interference model without free parameter describes the spectral positions and the linewidths of the modes in good agreement with the experiment.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.103903
DOI:
10.1103/PhysRevLett.93.103903
PACS:
42.25.Hz, 42.25.Ja, 42.55.Sa

*Corresponding author.

Electronic address: nobis@physik.uni-leipzig.de

†On leave from Rostov-on-Don State University, Mechanics and Applied Mathematics Research Institute, 344090 Rostov-on-Don, Russia.

 
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