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Dynamics of an exciton-carrier system in optically excited semiconductors

Technical Report:

Abstract

A set of nonlinear differential equations describing the dynamics of an exciton-photon-carrier system driven by two external classical laser fields is established taking into account the interaction between the quasiparticles as well as the screening of the photon-exciton transition due to the presence of definite exciton and carrier densities. It is shown that both stationary and transient behaviours of the system are considerably influenced by the densities. While the exciton-assisted photon-exciton transition may lead to optical tristability, it, together with the exciton-carrier interaction, modifies the parameter domains in which the phase trajectories form a limiting cycle, a torus or a strange attractor. The system dynamics thus can simply be controlled by adjusting the exciton or/and the carrier densities which in turn depend on the level of the external optical pumpings. (author). 26 refs, 1 fig.
Authors:
Publication Date:
Jul 01, 1991
Product Type:
Technical Report
Report Number:
IC-91/172
Reference Number:
SCA: 665300; PA: AIX-23:013860; SN: 92000639420
Resource Relation:
Other Information: PBD: Jul 1991
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; SEMICONDUCTOR MATERIALS; CARRIER MOBILITY; CARRIER DENSITY; EXCITONS; LASER RADIATION; 665300; INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
OSTI ID:
10111755
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE92614558; TRN: XA9130280013860
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
14 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

An, Nguyen Ba. Dynamics of an exciton-carrier system in optically excited semiconductors. IAEA: N. p., 1991. Web.
An, Nguyen Ba. Dynamics of an exciton-carrier system in optically excited semiconductors. IAEA.
An, Nguyen Ba. 1991. "Dynamics of an exciton-carrier system in optically excited semiconductors." IAEA.
@misc{etde_10111755,
title = {Dynamics of an exciton-carrier system in optically excited semiconductors}
author = {An, Nguyen Ba}
abstractNote = {A set of nonlinear differential equations describing the dynamics of an exciton-photon-carrier system driven by two external classical laser fields is established taking into account the interaction between the quasiparticles as well as the screening of the photon-exciton transition due to the presence of definite exciton and carrier densities. It is shown that both stationary and transient behaviours of the system are considerably influenced by the densities. While the exciton-assisted photon-exciton transition may lead to optical tristability, it, together with the exciton-carrier interaction, modifies the parameter domains in which the phase trajectories form a limiting cycle, a torus or a strange attractor. The system dynamics thus can simply be controlled by adjusting the exciton or/and the carrier densities which in turn depend on the level of the external optical pumpings. (author). 26 refs, 1 fig.}
place = {IAEA}
year = {1991}
month = {Jul}
}