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Spontaneous parametric scattering of microcavity polaritons in momentum space

Langbein, Wolfgang Werner 2004. Spontaneous parametric scattering of microcavity polaritons in momentum space. Physical Review B: Condensed Matter and Materials Physics 70 (20) , 205301. 10.1103/PhysRevB.70.205301

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We measure the spontaneous parametric emission from a semiconductor microcavity after resonant pulsed coherent excitation. Resolving the emission in time and two-dimensional momentum space, the underlying scattering processes, which were theoretically treated by [ Ciuti et al. Phys. Rev. B 63 041303 (2001)], are validated. The predicted figure-8 shaped distribution of the final states of the parametric scattering is observed. We find a narrowing of the momentum distribution with time, which is a feature of memory effects in the scattering due to parametric correlation. Additionally, the influence of higher-order scattering and pump depletion are observed in the experiment.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Physical Society
ISSN: 1098-0121
Last Modified: 04 Jun 2017 05:08

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