Yang, Qi-Fan and Jiang, Xue-Feng and Cui, Ya-Long and Shao, Linbo and Xiao, Yun-Feng (2013) Dynamical tunneling-assisted coupling of high-Q deformed microcavities using a free-space beam. Physical Review A, 88 (2). Art. No. 023810 . ISSN 1050-2947. http://resolver.caltech.edu/CaltechAUTHORS:20130903-100729406
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Abstract
We investigate the efficient free-space excitation of high-Q resonance modes in deformed microcavities via dynamical tunneling-assisted coupling. A quantum scattering theory is employed to study the free-space transmission properties, and it is found that the transmission includes the contribution from (1) the off-resonance background and (2) the on-resonance modulation, corresponding to the absence and presence of high-Q modes, respectively. The theory predicts asymmetric Fano-like resonances around high-Q modes in background transmission spectra, which are in good agreement with our recent experimental results. Dynamical tunneling across Kolmogorov-Arnold-Moser tori, which plays an essential role in the Fano-like resonance, is further studied. This efficient free-space coupling holds potential advantages to simplify experimental conditions and excite high-Q modes in higher-index-material microcavities.
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| Additional Information: | © 2013 American Physical Society. Received 26 March 2013; published 7 August 2013. Q.F.Y. and Y.F.X. thank Kerry Vahala and Fang-Jie Shu for insightful discussions. This work was supported by the 973 program (Grant No. 2013CB328704), the NSFC (Grants No. 11222440, No. 11004003, No. 11023003, and No. 1121091), the RFDPH (Grant No. 20120001110068), and Beijing Natural Science Foundation Program (Grant No. 4132058). Q.F.Y. and Y.L.C. were supported by the National Fund for Fostering Talents of Basic Science (Grants No. J1030310 and No. J1103205) and the Undergraduate Research Fund of Education Foundation of Peking University. | ||||||||||||||||||||||
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| Classification Code: | PACS: 42.60.Da, 42.55.Sa, 42.25.-p, 42.79.Gn | ||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20130903-100729406 | ||||||||||||||||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20130903-100729406 | ||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||
| ID Code: | 41049 | ||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||||
| Deposited On: | 16 Sep 2013 21:49 | ||||||||||||||||||||||
| Last Modified: | 16 Sep 2013 21:49 |
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