Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells

Not Accessible

Your library or personal account may give you access

Abstract

Although the importance of exciton/exciton interactions for the nonlinear optical response of GaAs quantum wells (QW) is well established by many experimental observations, the role of biexciton states in these processes is still an open question, even at low excitation densities. Evidence for the formation of biexcitons has been independently derived from pump-probe studies [1], from the density dependence of the photoluminescence (PL) line shape [2] and from signal modulations observed in degenerate-four-wave-mixing (DFWM) with incoherent light pulses [3]. Here, we report on time-resolved DFWM with parallel (PP) and cross-polarized (CP) pulses. Depending on the polarization geometry, the signals reveal strong quantum beats which correspond to the splitting between either the heavy hole (hh) and light hole (lh) exciton or the hh exciton and the biexciton.

© 1994 Optical Society of America

PDF Article
More Like This
Observation of biexciton contributions in pump-probe experiments on GaAs quantum weils

G. O. Smith, E. J Mayer, and J. Kuhl
QWH5 International Quantum Electronics Conference (IQEC) 1994

Polarization dependence of quantum beats between light-hole and heavy-hole excitons in GaAs quantum wells

J. Kuhl, E. J. Mayer, G. O. Smith, K. Bott, V. Heuckeroth, T. Meier, P. Thomas, S. W. Koch, R. Hey, and K. Ploog
QFD6 Quantum Electronics and Laser Science Conference (CLEO:FS) 1995

Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells

E. J. Mayer, G. O. Smith, J. Kuhl, A. Schulze, T. Meier, D. Bennhardt, S. W. Koch, P. Thomas, R. Hey, and K. Ploog
QThB4 European Quantum Electronics Conference (EQEC) 1994

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved