SUPERRADIANT EMISSION FROM BLOCH OSCILLATIONS IN SEMICONDUCTOR SUPERLATTICES

Authors
MARTINI R KLOSE G ROSKOS HG KURZ H GRAHN HT HEY R
Citation
R. Martini et al., SUPERRADIANT EMISSION FROM BLOCH OSCILLATIONS IN SEMICONDUCTOR SUPERLATTICES, Physical review. B, Condensed matter, 54(20), 1996, pp. 14325-14328
Citations number
15
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
20
Year of publication
1996
Pages
14325 - 14328
Database
ISI
SICI code
0163-1829(1996)54:20<14325:SEFBOI>2.0.ZU;2-V
Abstract
The superradiant character of submillimeter-wave emission from optical ly excited electronic Bloch oscillations in a GaAs/AlxGa1-xAs superlat tice is investigated by time-resolved terahertz emission spectroscopy. The intensity of the radiation and its decay time are studied as a fu nction of the density of excited charge carriers. From the measured em ission efficiency, the spatial amplitude of the charge oscillations is estimated.