Spontaneous parametric scattering of microcavity polaritons in momentum space

Details Spontaneous parametric scattering of microcavity polaritons in momentum space Spontaneous parametric scattering of microcavity polaritons in momentum space

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvb..70t5301l&link_type=abstract

Physical Review B, vol. 70, Issue 20, id. 205301

Other

37

Iii-V Semiconductors, Other Luminescence And Radiative Recombination, Optical Parametric Oscillators And Amplifiers

Scientific paper

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.

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