NONLINEAR-OPTICAL SPECTROSCOPY IN GAAS - MAGNETIC FREEZEOUT OF EXCITONS

Authors
JIANG M WANG HL MERLIN R STEEL DG CARDONA M
Citation
M. Jiang et al., NONLINEAR-OPTICAL SPECTROSCOPY IN GAAS - MAGNETIC FREEZEOUT OF EXCITONS, Physical review. B, Condensed matter, 48(20), 1993, pp. 15476-15479
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
48
Issue
20
Year of publication
1993
Pages
15476 - 15479
Database
ISI
SICI code
0163-1829(1993)48:20<15476:NSIG-M>2.0.ZU;2-Z
Abstract
Nonlinear magneto-optical properties of Wannier excitons in GaAs are s tudied at 4 K using four-photon nearly degenerate parametric coupling. The results show a large enhancement in the nonlinear optical respons e related to a field-induced decrease in exciton mobility due to magne tic freezeout. High-resolution cw nonlinear spectroscopy is used to me asure the relative strength of inter-Landau-level coupling and shows t hat the nonlinearity is dominated by Coulomb effects.