Photon echoes from two-dimensional excitons in GaAs-AlGaAs quantum wells
- 1 November 1985
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 47 (9) , 995-997
- https://doi.org/10.1063/1.95955
Abstract
We report photon echoes from two-dimensional (2D) excitons in a GaAs-AlGaAs quantum well structure at 2 K. We analyze our data with a theoretical model of the generation of photon echoes by pulses of finite length which includes phase relaxation during excitation. A line shape analysis yields the phase relaxation time of 2D excitons. We find that the phase coherence near the line center decays, together with the resonant population, within 4 ps, whereas well below line center the phase coherence is conserved for times up to 20 ps.Keywords
This publication has 10 references indexed in Scilit:
- Studies of exciton localization in quantum-well structures by nonlinear-optical techniquesJournal of the Optical Society of America B, 1985
- Exciton holeburning in GaAs/GaAlAs multiquantum wellsJournal of Luminescence, 1984
- Localized and delocalized two-dimensional excitons in GaAs-AlGaAs multiple-quantum-well structuresPhysical Review B, 1984
- Femtosecond Orientational Relaxation of Photoexcited Carriers in GaAsPhysical Review Letters, 1984
- Picosecond degenerate four-wave mixing through orientation and concentration gratings in GaAsApplied Physics Letters, 1984
- Experimental Test of the Optical Bloch Equations for SolidsPhysical Review Letters, 1983
- Picosecond transient orientational and concentration gratings in germaniumIEEE Journal of Quantum Electronics, 1983
- Effects of hole burning on pulse propagation in GaAs quantum wellsPhysical Review B, 1982
- Spatial Optical Parametric Coupling of Picosecond Light Pulses and Transverse Relaxation Effect in Resonant MediaJournal of the Physics Society Japan, 1979
- Coherent Transient Effects in Optical SpectroscopyAnnual Review of Physical Chemistry, 1979