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Bragg diffraction of microcavity polaritons by a surface acoustic wave

Cho, Kikuo, Okumoto, Kazunori, Nikolaev, Nikolay Irmanov and Ivanov, Alexei 2005. Bragg diffraction of microcavity polaritons by a surface acoustic wave. Physical Review Letters (PRL) 94 , 226406. 10.1103/PhysRevLett.94.226406

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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 νSAW=1 GHz and Iac≲100 W/cm2 the main acoustically induced band gap can be as large as ΔMCac≃0.6 meV and the Bragg replicas up to n=3 can be observed.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Physical Society
ISSN: 0031-9007
Last Modified: 19 Mar 2016 22:03

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