STIMULATED FAR-INFRARED EMISSION FROM COPPER-DOPED GERMANIUM-CRYSTALS

Authors
SIRMAIN G REICHERTZ LA DUBON OD HALLER EE HANSEN WL BRUNDERMANN E LINHART AM ROSER HP
Citation
G. Sirmain et al., STIMULATED FAR-INFRARED EMISSION FROM COPPER-DOPED GERMANIUM-CRYSTALS, Applied physics letters, 70(13), 1997, pp. 1659-1661
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
70
Issue
13
Year of publication
1997
Pages
1659 - 1661
Database
ISI
SICI code
0003-6951(1997)70:13<1659:SFEFCG>2.0.ZU;2-U
Abstract
We have detected stimulated far-infrared emission from copper-doped ge rmanium single crystals. By varying the magnetic field between 1 and 2 .3 T, we have achieved emission in the range of 70-120 cm(-1). Laser a ction was observed for crystals with a copper acceptor concentration a s high as 1.5 x 10(15) cm(-3), a doping level that is considerably hig her than that of any single or double acceptor doped Ge laser. Stimula ted emission from Ge crystals with such a high Cu concentration is pos sible because only a small fraction of the copper accepters is ionized during operation. (C) 1997 American Institute of Physics.