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Properties of the signal mode in the polariton optical parametric oscillator regime

Dunnett, K; Ferrier, A; Zamora, A; Dagvadorj, G; Szymanska, MH; (2018) Properties of the signal mode in the polariton optical parametric oscillator regime. Physical Review B , 98 (16) 10.1103/PhysRevB.98.165307. Green open access

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Abstract

Theoretical analyses of the polariton optical parametric oscillator (OPO) regime often rely on a mean-field approach based on the complex Gross-Pitaevskii equations in a three-mode approximation, where only three momentum states, the signal, pump, and idler, are assumed to be significantly occupied. This approximation, however, lacks a constraint to uniquely determine the signal and idler momenta. In contrast, multimode numerical simulations and experiments show a unique momentum structure for the OPO states. In this work we show that an estimate for the signal momentum chosen by the system can be found from a simple analysis of the pump-only configuration. We use this estimate to investigate how the chosen signal momentum depends on the properties of the drive.

Type: Article
Title: Properties of the signal mode in the polariton optical parametric oscillator regime
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.98.165307
Publisher version: https://doi.org/10.1103/PhysRevB.98.165307
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Technology, Physical Sciences, Materials Science, Multidisciplinary, Physics, Applied, Physics, Condensed Matter, Materials Science, Physics, SEMICONDUCTOR MICROCAVITIES, STIMULATED SCATTERING, CONDENSATION
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: http://discovery.ucl.ac.uk/id/eprint/10061143
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