Author: S.k Zhang

0000000000793675

AUTHOR

S.k Zhang

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Microscopic carrier dynamics in quantum wells modulated by high-frequency lateral fields

2002

Abstract We have investigated the dynamics of photogenerated carriers in GaAs quantum wells under the influence of high-frequency fields produced by metal gratings and by surface acoustic waves (SAW's) using spatially and time-resolved photoluminescence (PL). The frequency and phase of the PL oscillations induced by the high-frequency field yield information about the spatial distribution of the carriers and, in the case of SAW's, about the band-gap modulation induced by the SAW strain.

PhysicsPhotoluminescenceYield (engineering)Field (physics)Condensed matter physicsPhase (waves)Acoustic waveCondensed Matter::Mesoscopic Systems and Quantum Hall EffectCondensed Matter PhysicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceModulationCarrier dynamicsQuantum wellPhysica E: Low-dimensional Systems and Nanostructures

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