II–VI semiconductor microcavity angle‐resolved coherent dynamics

Autor:	Régis André, A. Huynh, Claude Delalande, R. Romestain, Le Si Dang, Ph. Roussignol, Jérôme Tignon
Rok vydání:	2003
Předmět:	Condensed Matter::Quantum Gases Physics Magic angle Condensed matter physics Condensed Matter::Other Scattering business.industry Dephasing Physics::Optics Semiconductor Polariton Atomic physics Parametric oscillator business Mixing (physics) Parametric statistics
Zdroj:	physica status solidi (c). :1401-1404
ISSN:	1610-1634
DOI:	10.1002/pssc.200303213
Popis:	We used angle-resolved time-integrated four-wave mixing to study the pump dynamics in a II–VI semiconductor microcavity polariton parametric amplifier. The low-energy polariton dephasing time decreases at large angles when the excitonic reservoir becomes accessible to polariton–polariton scattering. Additionally, in the parametric amplification regime, with phase matching for the polariton–polariton scattering at the magic angle, we observe a strong reduction of the FWM decay time. Numerical analysis of the polariton coherent dynamics in this regime allows to interpret the observed features in terms of time dependent pump depletion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2f549ae9af8fb631443bbab07da7be28 https://doi.org/10.1002/pssc.200303213 Zobrazit plný text záznamu Plný text