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Dynamic Process of Free Space Excitation of Asymmetric Resonant Microcavity

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3 Author(s)
Fang-Jie Shu ; Dept. of Phys., Shangqiu Normal Univ., Shangqiu, China ; Chang-Ling Zou ; Fang-Wen Sun

The underlying physics and detailed dynamical process of the free space beam excitation to the asymmetric resonant microcavity are studied numerically. Taking the well-studied quadrupole deformed microcavity as an example, we use a Gaussian beam to excite the high-Q mode. The simulation provides a powerful platform to study the underlying physics. The transmission spectrum and intracavity energy can be obtained directly. Unique transmission spectrums were observed, which show the asymmetric Fano-type lineshapes as a result of the interference between the different light paths. Then excitation efficiencies varying with the aiming distance of the incident Gaussian beam and the rotation angle of the cavity were studied, which is greatly consistent with the reversal of emission efficiencies. By projecting the position-dependent excitation efficiency to the phase space, the correspondence between the excitation and emission was demonstrated. In addition, we compared the Husimi distributions of the excitation processes and provided more direct evidences of the dynamical tunneling process in the excitation process.

Published in:

Lightwave Technology, Journal of  (Volume:31 ,  Issue: 12 )

Date of Publication:

June15, 2013

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