Open AccessOptical bistability and multistability in ladder-type four-level atomic coherence medium
Author(s) -
Aixi Chen,
Chen De-Hai,
Zhiping Wang
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.5450
Subject(s) - multistability , optical bistability , bistability , physics , atomic coherence , coherence (philosophical gambling strategy) , laser , coupling (piping) , field (mathematics) , atomic physics , optics , optoelectronics , quantum mechanics , nonlinear optics , materials science , nonlinear system , mathematics , pure mathematics , metallurgy
Optical bistabilityOB and optical multistabilityOM behaviour of ladder-type four-level atom in a unidirectional ring cavity driven by three laser fields is studied. Three paths of photon transition are coupled with the laser fields. In this case, the laser field ΩB coupling with two middle levels is very important. When the ΩB is increased, optical bistability threshold significantly decreases and optical multistability appears. The effects of the laser field coupling with two upper levels on optical bistability are also discussed. Furthermore, we analyze the effects of the detuning of probe field and atomic cooperation parameter on OB and OM.