PHOTON DRAG SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-SYSTEM

Authors
SIGG H VANSON P KOHLER K
Citation
H. Sigg et al., PHOTON DRAG SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-SYSTEM, Surface science, 362(1-3), 1996, pp. 468-471
Citations number
11
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
362
Issue
1-3
Year of publication
1996
Pages
468 - 471
Database
ISI
SICI code
0039-6028(1996)362:1-3<468:PDSOA2>2.0.ZU;2-Y
Abstract
The photon drag effect in a two-dimensional electron gas of a GaAs/AlG aAs multi-quantum well system is measured using the ps infrared pulses of the wavelength-tunable free electron laser source FELIX. The tempo ral response of the sample on a ps timescale has been verified, and th e continuous spectral response through the intersubband resonance is i nvestigated for low and high intensities al room temperature aid al T= 100 K. An analysis of the lineshape yields information about the momen tum relaxation times of the electrons in the ground and excited subban ds.