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Chaos-Assisted Directional Light Emission From Microcavity Lasers, Susumu Shinohara, Takahisa Harayama, Takehiro Fukushima, Martina Hentschel, Takahiko Sasaki, Evgenii Narimanov

Birck and NCN Publications

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 …