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Terahertz frequency radiation from Bloch oscillations in GaAs/Al0.3Ga0.7As superlattices

Jin, Kui-Juan LU ; Odnoblyudov, M; Shimada, Y; Hirakawa, K and Chao, Koung-An LU (2003) In Physical Review B (Condensed Matter and Materials Physics) 68(15: 153315).
Abstract
We have performed a joint theoretical and experimental study to investigate the terahertz radiation from Bloch oscillations in a GaAs/Al0.3Ga0.7As superlattice under the condition that there is no Zener tunneling. The total radiation intensity has been calculated with a semiclassical approach in the low field regime where the Wannier-Stark ladder (WSL) cannot be resolved, and with an exact numerical solution in the high field regime where the WSL is well formed. With an adjustment of the intensity units, without fitting material parameters, the calculated results agree almost perfectly with the measured data given in arbitrary units. Consequently, our work gives convincing evidence that the measured THz radiation is due to the Bloch... (More)
We have performed a joint theoretical and experimental study to investigate the terahertz radiation from Bloch oscillations in a GaAs/Al0.3Ga0.7As superlattice under the condition that there is no Zener tunneling. The total radiation intensity has been calculated with a semiclassical approach in the low field regime where the Wannier-Stark ladder (WSL) cannot be resolved, and with an exact numerical solution in the high field regime where the WSL is well formed. With an adjustment of the intensity units, without fitting material parameters, the calculated results agree almost perfectly with the measured data given in arbitrary units. Consequently, our work gives convincing evidence that the measured THz radiation is due to the Bloch oscillations. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
68
issue
15: 153315
publisher
American Physical Society
external identifiers
  • wos:000186422600026
  • scopus:8744279561
ISSN
1098-0121
DOI
language
English
LU publication?
yes
id
c000c51c-b68a-4770-a62c-469b10a9135d (old id 295933)
date added to LUP
2007-09-13 13:58:48
date last changed
2018-06-17 04:48:33
@article{c000c51c-b68a-4770-a62c-469b10a9135d,
  abstract     = {We have performed a joint theoretical and experimental study to investigate the terahertz radiation from Bloch oscillations in a GaAs/Al0.3Ga0.7As superlattice under the condition that there is no Zener tunneling. The total radiation intensity has been calculated with a semiclassical approach in the low field regime where the Wannier-Stark ladder (WSL) cannot be resolved, and with an exact numerical solution in the high field regime where the WSL is well formed. With an adjustment of the intensity units, without fitting material parameters, the calculated results agree almost perfectly with the measured data given in arbitrary units. Consequently, our work gives convincing evidence that the measured THz radiation is due to the Bloch oscillations.},
  author       = {Jin, Kui-Juan and Odnoblyudov, M and Shimada, Y and Hirakawa, K and Chao, Koung-An},
  issn         = {1098-0121},
  language     = {eng},
  number       = {15: 153315},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Terahertz frequency radiation from Bloch oscillations in GaAs/Al0.3Ga0.7As superlattices},
  url          = {http://dx.doi.org/},
  volume       = {68},
  year         = {2003},
}