Title :
Biexcitons or bipolaritons in a semiconductor microcavity?
Author :
Borri, P. ; Langbein, W. ; Woggon, U. ; Jensen, J.R. ; Hvam, J.M.
Author_Institution :
Lehrstuhl fur Exp. Phys., Dortmund Univ., Germany
Abstract :
Summary form only given. Due to the possibility of realizing strong exciton-photon coupling in semiconductor microcavities, one could expect that also biexcitons are strongly modified by polariton effects, leading to formation of bipolaritons. In this work, we have investigated the nonlinear optical properties of a high-quality quantum well (QW) microcavity in time-resolved pump-probe spectroscopy at T=5 K. The sample consists of a 25 nm GaAs single QW in the center of a wedged /spl lambda/-cavity with AlAs-AlGaAs Bragg reflectors.
Keywords :
III-V semiconductors; biexcitons; gallium arsenide; high-speed optical techniques; optical pumping; polaritons; semiconductor quantum wells; time resolved spectroscopy; 25 nm; AlAs-AlGaAs; AlAs-AlGaAs Bragg reflectors; GaAs; GaAs single QW; biexcitons; bipolaritons; high-quality quantum well microcavity; nonlinear optical properties; polariton effects; semiconductor microcavities; semiconductor microcavity; strong exciton-photon coupling; time-resolved pump-probe spectroscopy; wedged /spl lambda/-cavity; Excitons; Gallium arsenide; Lead compounds; Microcavities; Nonlinear optics; Optical polarization; Optical pumping; Probes; Pulse measurements; Spectroscopy;
Conference_Titel :
Quantum Electronics Conference, 2000. Conference Digest. 2000 International
Conference_Location :
Nice, France
Print_ISBN :
0-7803-6318-3
DOI :
10.1109/IQEC.2000.908167
