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Polariton-polariton interaction potentials determination by pump-probe degenerate scattering in a multiple microcavity

By Thimotée Lecomte, David Taj, Aristide Lemaitre, Jacqueline Bloch, Claude Delalande, Jérôme Tignon and Philippe Roussignol

Abstract

International audienceWe study the polarisation-dependent polariton-polariton interaction through its effect on a parametric scattering process in a microcavity (MC). The ratio of the anti-circular interaction strength V2 over its co-circular counterpart V1 is involved in defining the regime in which many nonlinear processes arise in MCs, such as parametric conversion or condensation. We measure the ratio V2/V1 using a stimulated energy-degenerate parametric scattering process in a multiple MC. The sample is pumped at normal incidence, probed with a non-zero angle, and the phase-matched idler is observed at the opposite angle. The idler behaviour, both in power and polarisation, is compared to a hamiltonian interaction model that takes into account the two polarisation-dependent parametric scattering channels characterized by V1 and V2. The proposed method to measure the ratio V2/V1 is convenient and precise. The flexibility of the triple MC allows to observe the process and measure this ratio over a large range of detunings, where we find it to be highly dependent on the detuning. These measurements complement the previous study of Vladimirova et al. [Phys. Rev. B 82, 075301 (2010)] with an original approach and for detunings that were unexplored up to now

Topics: [ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]
Publisher: American Physical Society
Year: 2014
DOI identifier: 10.1103/PhysRevB.89.155308
OAI identifier: oai:HAL:hal-01066303v1
Provided by: Hal-Diderot

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