NONLINEAR FAR-INFRARED ABSORPTION IN INSB DUE TO LIGHT IMPACT IONIZATION

Authors
GANICHEV SD DIENER J PRETTL W
Citation
Sd. Ganichev et al., NONLINEAR FAR-INFRARED ABSORPTION IN INSB DUE TO LIGHT IMPACT IONIZATION, Applied physics letters, 64(15), 1994, pp. 1977-1979
Citations number
13
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
64
Issue
15
Year of publication
1994
Pages
1977 - 1979
Database
ISI
SICI code
0003-6951(1994)64:15<1977:NFAIID>2.0.ZU;2-S
Abstract
A highly nonlinear far-infrared free-carrier absorption, rising with t he radiation intensity, has been observed in InSb. It is shown that th e nonlinearity arises from an increase in the number of free carriers caused by the generation of electron-hole pairs by light impact ioniza tion in the radiation field of a powerful far-infrared laser. The obse rved nonlinearity permits the investigation of the process of impact i onization by a contactless optical method.