Bragg diffraction of microcavity polaritons by a surface acoustic wave |
| |
Authors: | Cho Kikuo Okumoto Kazunori Nikolaev N I Ivanov A L |
| |
Affiliation: | Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka 560-8531, Japan. |
| |
Abstract: | Bragg scattering of polaritons by a coherent acoustic wave is mediated and strongly enhanced by the exciton states resonant with the acoustic and optic fields in the intraband and interband transitions, respectively. In this case, in contrast with conventional acousto-optics, the resonantly enhanced Bragg spectra reveal the multiple orders of diffracted light. For polaritons in GaAs microcavities driven by a surface acoustic wave of nu(SAW)=1 GHz and I(ac)< or approximately 100 W/cm(2) the main acoustically induced band gap can be as large as Delta(MC)(ac) approximately equal to 0.6 meV and the Bragg replicas up to n=3 can be observed. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|