Chaos-assisted directional light emission from microcavity lasers

Susumu Shinohara*, Takahisa Harayama, Takehiro Fukushima, Martina Hentschel, Takahiko Sasaki, Evgenii E. Narimanov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)


We study the effect of dynamical tunneling on emission from ray-chaotic microcavities by introducing a suitably designed deformed disk cavity. We focus on its high quality factor modes strongly localized along a stable periodic ray orbit confined by total internal reflection. It is shown that dominant emission originates from the tunneling from the periodic ray orbit to chaotic ones; the latter eventually escape from the cavity refractively, resulting in directional emission that is unexpected from the geometry of the periodic orbit, but fully explained by unstable manifolds of chaotic ray dynamics. Experimentally performing selective excitation of those modes, we succeeded in observing the directional emission in good agreement with theoretical prediction. This provides decisive experimental evidence of dynamical tunneling in a ray-chaotic microcavity.

Original languageEnglish
Article number163902
JournalPhysical Review Letters
Issue number16
Publication statusPublished - 2010 Apr 21
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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