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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 9 — Sep. 1, 2006
  • pp: 1793–1800

Observation of whispering-gallery and directional resonant laser emission in ellipsoidal microcavities

Liangmin Zhang, You-Xiong Wang, Fajian Zhang, and Richard O. Claus  »View Author Affiliations


JOSA B, Vol. 23, Issue 9, pp. 1793-1800 (2006)
http://dx.doi.org/10.1364/JOSAB.23.001793


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Abstract

Whispering-gallery resonant laser emission is reported in CdSe-tagged polystyrene microcavities. A clear intensity threshold for laser emission is observed. Using a recently developed asymptotic expansion derived from Mie theory, we have theoretically identified the experimentally observed discrete resonant peaks and assigned them to different quantum states. In fluorescent carboxylate-modified ellipsoidal polystyrene microcavities, we have observed that whispering-gallery mode and directional laser emission can be excited simultaneously. To understand our experimental results, we extend the asymptotic expansion from spherical to ellipsoidal microcavities to explain the whispering-gallery mode behavior and develop a simple ray-optics model to interpret the directional emission. The obtained numerical data agree well with experimental observation.

© 2006 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3380) Lasers and laser optics : Laser materials
(140.3410) Lasers and laser optics : Laser resonators
(160.0160) Materials : Materials
(160.2540) Materials : Fluorescent and luminescent materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 7, 2005
Revised Manuscript: February 28, 2006
Manuscript Accepted: May 4, 2006

Citation
Liangmin Zhang, You-Xiong Wang, Fajian Zhang, and Richard O. Claus, "Observation of whispering-gallery and directional resonant laser emission in ellipsoidal microcavities," J. Opt. Soc. Am. B 23, 1793-1800 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-9-1793

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