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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 25 — Dec. 16, 2013
  • pp: 30227–30232

Strong bound exciton-photon coupling in ZnO whispering gallery microcavity

Liaoxin Sun, Hongxing Dong, Wei Xie, Jian Lu, Zhanghai Chen, Xuechu Shen, and Wei Lu  »View Author Affiliations

Optics Express, Vol. 21, Issue 25, pp. 30227-30232 (2013)

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We report the cathodoluminescence (CL) study of bound-exciton-polaritons in ZnO whispering gallery (WG) microcavity. Thanks to the very high spatial resolution (: 100 nm) of CL technique, a scanning CL mapping along the tapered ZnO nanowire is achieved. We observe a clear anticrossing behavior which demonstrates the strong coupling between cavity mode and bound-excitons. Coupled oscillator model including both bound excitons and free excitons fits well with the experimental results. The energy splitting of bound-exciton-polaritons:2.6 meV is obtained.

© 2013 Optical Society of America

OCIS Codes
(240.5420) Optics at surfaces : Polaritons
(140.3945) Lasers and laser optics : Microcavities
(160.4236) Materials : Nanomaterials

ToC Category:

Original Manuscript: September 24, 2013
Revised Manuscript: November 4, 2013
Manuscript Accepted: November 7, 2013
Published: December 2, 2013

Liaoxin Sun, Hongxing Dong, Wei Xie, Jian Lu, Zhanghai Chen, Xuechu Shen, and Wei Lu, "Strong bound exciton-photon coupling in ZnO whispering gallery microcavity," Opt. Express 21, 30227-30232 (2013)

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