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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 4 — Feb. 15, 2009
  • pp: 509–511

Low-threshold microlaser in a high-Q asymmetrical microcavity

Y.-F. Xiao, C.-H. Dong, C.-L. Zou, Z.-F. Han, L. Yang, and G.-C. Guo  »View Author Affiliations

Optics Letters, Vol. 34, Issue 4, pp. 509-511 (2009)

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We experimentally report an asymmetrical spherical microcavity with thermal-induced deformation, in which five-bounce whispering-gallery modes possess not only ultrahigh quality factors ( Q ) but also remarkably directional escape emission from the microsphere boundary. With efficient free-space excitation and collection, a low-threshold microlaser is demonstrated and exhibits a highly directional emission. Our measurement agrees well with the theoretical predictions by corrected Fresnel law.

© 2009 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(230.5750) Optical devices : Resonators
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 28, 2008
Revised Manuscript: December 7, 2008
Manuscript Accepted: January 5, 2009
Published: February 12, 2009

Y.-F. Xiao, C.-H. Dong, C.-L. Zou, Z.-F. Han, L. Yang, and G.-C. Guo, "Low-threshold microlaser in a high-Q asymmetrical microcavity," Opt. Lett. 34, 509-511 (2009)

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