Resonant generation of terahertz optical sidebands from confined magnetoexcitons

We have probed the internal structure and nonlinear response of magnetoexcitons in GaAs/AlGaAs quantum wells by resonantly driving one- and two-photon internal transitions with intense terahertz electric fields. Strong near-bandgap emission lines, or optical sidebands, appear at frequencies ω NIR ±...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 1998-09, Vol.144 (1), p.115-122
Main Authors: Kono, J., Su, M.Y., Černe, J., Sherwin, M.S., Allen Jr, S.J., Inoshita, T., Noda, T., Sakaki, H.
Format: Article
Language:English
Subjects:
Confined excitons
Free-electron lasers
Optical sidebands
Terahertz dynamics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have probed the internal structure and nonlinear response of magnetoexcitons in GaAs/AlGaAs quantum wells by resonantly driving one- and two-photon internal transitions with intense terahertz electric fields. Strong near-bandgap emission lines, or optical sidebands, appear at frequencies ω NIR ± 2 nω THz, where ω NIR is the interband exciton-creation frequency, ω THz is the frequency of the driving field, and n is an integer. The intensity of the sidebands exhibits pronounced enhancement when ω THz coincides with transitions between magnetically tuned energy levels in the excitons, providing new and accurate information on the internal dynamics of excitons.
ISSN:0168-583X
1872-9584
DOI:10.1016/S0168-583X(98)00301-2