Enhanced coherent terahertz emission from indium arsenide in the presence of a magnetic field

Authors
McLaughlin, R Corchia, A Johnston, MB Chen, Q Ciesla, CM Arnone, DD Jones, GAC Linfield, EH Davies, AG Pepper, M
Citation
R. Mclaughlin et al., Enhanced coherent terahertz emission from indium arsenide in the presence of a magnetic field, APPL PHYS L, 76(15), 2000, pp. 2038-2040
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
76
Issue
15
Year of publication
2000
Pages
2038 - 2040
Database
ISI
SICI code
0003-6951(20000410)76:15<2038:ECTEFI>2.0.ZU;2-#
Abstract
We demonstrate enhancement of terahertz (THz) emission from indium arsenide at 170 K in magnetic fields (B) up to 8 T. An order of magnitude increase in visible to terahertz conversion efficiency was observed, with no suggest ion of saturation of the TE polarization at higher magnetic fields. Free-sp ace electro-optic sampling measurements confirmed the coherent nature of th is radiation over the field range investigated, and gave an insight into th e carrier motion subsequent to photoexcitation, which may be responsible fo r the observed THz power enhancement. (C) 2000 American Institute of Physic s. [S0003-6951(00)03115-6].