INVESTIGATION OF BLOCH OSCILLATIONS IN A GAAS ALGAAS SUPERLATTICE BY SPECTRALLY RESOLVED 4-WAVE-MIXING/

Authors
LEISCHING P BOLIVAR PH SCHWEDLER R LEO K KURZ H KOHLER K GANSER P
Citation
P. Leisching et al., INVESTIGATION OF BLOCH OSCILLATIONS IN A GAAS ALGAAS SUPERLATTICE BY SPECTRALLY RESOLVED 4-WAVE-MIXING/, Semiconductor science and technology, 9(5), 1994, pp. 419-421
Citations number
15
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Condensed Matter","Material Science
Journal title
Semiconductor science and technology → ACNP
ISSN journal
02681242
Volume
9
Issue
5
Year of publication
1994
Supplement
S
Pages
419 - 421
Database
ISI
SICI code
0268-1242(1994)9:5<419:IOBOIA>2.0.ZU;2-O
Abstract
We study Bloch oscillations (BO) in GaAs/AlGaAs superlattices with min iband widths of 19 and 38 meV at various lattice temperatures. In the time domain, we use transient degenerate four-wave mixing (FWM), while simultaneously monitoring the Wannier-Stark ladder (WSL) in the frequ ency domain by transmission spectroscopy. Spectrally resolved FWM meas urements prove unambiguously that the oscillations in the decay of the FWM signal are due to quantum interference as expected for a wavepack et performing the Bo