2010/04/21 by Susumu Shinohara, Takahisa Harayama, Takehiro Fukushima +3 · 9 citations
Computer Science · Engineering · Physics and Astronomy · #Nonlinear Dynamics and Pattern Formation #Nonlinear Photonic Systems #Photonic and Optical Devices #nlin.CD #physics.optics
paper · pdf · doi:10.1103/physrevlett.104.163902
published as Phys. Rev. Lett. 104, 163902 (2010) · 4 pages, 5 figures
openalex publication_date 2010/04/21 · arxiv created 2010/04/22 · arxiv updated 2010/04/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.