OPTICAL CONTROL OF BLOCH-OSCILLATION AMPLITUDES - FROM HARMONIC SPATIAL MOTION TO BREATHING MODES

Authors
SUDZIUS M LYSSENKO VG LOSER F LEO K DIGNAM MM KOHLER K
Citation
M. Sudzius et al., OPTICAL CONTROL OF BLOCH-OSCILLATION AMPLITUDES - FROM HARMONIC SPATIAL MOTION TO BREATHING MODES, Physical review. B, Condensed matter, 57(20), 1998, pp. 12693-12696
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
57
Issue
20
Year of publication
1998
Pages
12693 - 12696
Database
ISI
SICI code
0163-1829(1998)57:20<12693:OCOBA->2.0.ZU;2-2
Abstract
We use a technique to measure the spatial dynamics of Bloch wave packe ts in semiconductor superlattices and investigate the dependence of th e dynamics on the optical excitation conditions. For excitations well above or below the center of the Wannier-Stark ladder (WSL), the wave packets perform harmonic oscillations following the prediction of Zene r; for excitations near the center of the WSL, the wave packets underg o a symmetric oscillation with virtually zero center-of-mass amplitude .