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Terahertz radiation of microcavity dipolaritons

Seedhouse, A., Wilkes, J., Kulakovskii, V. D. and Muljarov, E. A. 2019. Terahertz radiation of microcavity dipolaritons. Optics Letters 44 (17) , pp. 4339-4342. 10.1364/OL.44.004339

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Abstract

We propose the use of dipolaritons—quantum well excitons with a large dipole moment, coupled to a planar microcavity—for generating terahertz (THz) radiation. This is achieved by exciting the system with two THz detuned lasers that leads to dipole moment oscillations of the exciton polariton at the detuning frequency, thus generating a THz emission. We have optimized the structural parameters of a system with microcavity embedded AlGaAs double quantum wells and shown that the THz emission intensity is maximized if both of the laser frequencies match different dipolariton states. The influence of the electronic tunnel coupling between the wells on the frequency and intensity of the THz radiation is also investigated, demonstrating a trade-off between the polariton dipole moment and the Rabi splitting.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Publisher: Optical Society of America
ISSN: 0146-9592
Date of First Compliant Deposit: 23 August 2019
Date of Acceptance: 4 August 2019
Last Modified: 27 Aug 2020 02:05
URI: http://orca-mwe.cf.ac.uk/id/eprint/125099

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