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Properties of the signal mode in the polariton optical parametric oscillator regime
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
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Number of Authors: 52018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 16, article id 165307Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2018. Vol. 98, no 16, article id 165307
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Materials Engineering Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-161919DOI: 10.1103/PhysRevB.98.165307ISI: 000448165800004OAI: oai:DiVA.org:su-161919DiVA, id: diva2:1262827
Available from: 2018-11-13 Created: 2018-11-13 Last updated: 2018-11-13Bibliographically approved

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