Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chaos-assisted directional light emission from microcavity lasers   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.

7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex