Polariton parametric amplifier pump dynamics in the coherent regime.
We studied the pump coherent dynamics in a II-VI microcavity parametric amplifier, using angle-resolved four-wave mixing. The polariton parametric amplification is found to result in a strong quenching and saturation of the pump coherence lifetime above the threshold. For the polariton scattering processes that remain below the amplification threshold, we find an angle-dependent collision broadening associated with the efficiency of the polariton scattering towards the excitonic reservoir.
Huynh
A
A
Laboratoire de Physique de la Matière Condensée, Ecole Normale Supérieure, 24, rue Lhomond, F-75005 Paris, France.
Tignon
J
J
Larsson
O
O
Roussignol
Ph
P
Delalande
C
C
André
R
R
Romestain
R
R
Le Si Dang