Title
Optical bistability and multistability in four-level systems
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Stockholm ,
Subject
Physics
Source (journal)
Physica scripta. - Stockholm
Volume/pages
68(2003) :3 , p. 199-204
ISSN
0031-8949
ISI
000185204400005
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The optical behavior of a four-level system in a ring cavity driven by two coherent laser fields is studied. One laser field is treated as the incident field and the other the control field, respectively. It is found that there is optical transparency when the difference between the two frequency detunings of the incident and control fields from the corresponding atomic transition frequencies is zero. Optical bistability can be produced and controlled by increasing the magnitude of the frequency difference. The bistable hysteresis becomes larger when the frequency difference is increased. Further increase of the latter can lead to onset of multistability.
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