V. D. Kulakovskii, A. A. Demenev, “Coherence dynamics of the exciton-polariton system in GaAs microcavities under pulse resonant photoexcitation”, Fizika i Tekhnika Poluprovodnikov, 2019, Volume 53, Issue 10,Pages <nobr>1343

XXIII International symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 11–14, 2019

Coherence dynamics of the exciton-polariton system in GaAs microcavities under pulse resonant photoexcitation

V. D. Kulakovskii^ab, A. A. Demenev^a

^a Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region
^b National Research University "Higher School of Economics", Moscow

Abstract: It is found that exciton-polariton systems resonantly excited in GaAs semiconductor microcavities by coherent picosecond laser pulses inherit the high coherence of the laser beam and retain it for their lifetime ( $>$ 100 ps), while the coherence-formation time in polariton systems resonantly excited by incoherent pulses without excitation of the exciton reservoir exceeds 200 ps.

Keywords: exciton polaritons, Bose–Einstein condensate, spatial coherence.

Received: 24.04.2019
Revised: 29.04.2019
Accepted: 29.04.2019

DOI: 10.21883/FTP.2019.10.48287.33