Theory of amplification without inversion in a trapped four-level atomic system

Authors
Kim, HA Choi, YS Kim, BS Moon, HS Kim, JB
Citation
Ha. Kim et al., Theory of amplification without inversion in a trapped four-level atomic system, J KOR PHYS, 35(3), 1999, pp. 203-206
Citations number
20
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN journal
03744884 → ACNP
Volume
35
Issue
3
Year of publication
1999
Pages
203 - 206
Database
ISI
SICI code
0374-4884(199909)35:3<203:TOAWII>2.0.ZU;2-4
Abstract
We investigate the mechanism of steady-state light amplification without po pulation inversion in a trapped four-level atomic system. With analytical a nd numerical analyses, we provide insight into the origin of the gain and d erive the conditions under which the system exhibits gain without populatio n inversion in any state basis. These theoretical results can be used to ch oose the appropriate atomic system for exhibiting amplification without pop ulation inversion.