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Low-threshold microlaser in a high-Q asymmetrical microcavity

  • Y. F. Xiao
  • , C. H. Dong
  • , C. L. Zou
  • , Z. F. Han
  • , L. Yang
  • , G. C. Guo

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)509-511
Number of pages3
JournalOptics Letters
Volume34
Issue number4
DOIs
StatePublished - Feb 15 2009

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