| We study tunneling emission of high-Q modes in deformed microcavities. Unlike refractive emission, the tunneling emission is characterized by its free-space emergence at a distance δ from the cavity boundary. We have shown that the emission is, in general, asymmetric in its strength, in spite of the symmetric feature of both the Poincare surface of section and the major mode distribution. The asymmetric tunneling emission can be understood by the effect of short-time ray dynamics near the critical line during dynamical tunneling process. In addition, we illustrate that the distance δ arises from interference of the tangential refractive outputs following the dynamical tunneling process. |
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