Open AccessEnhanced Kerr nonlinear effect of Raman transition in a Λ-type three-level atomic system
Author(s) -
Haibin Wu,
Chang Won Hong,
Jing Ma,
Changde Xie,
Hai Wang
Publication year - 2005
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.54.3632
Subject(s) - raman spectroscopy , kerr effect , nonlinear system , atomic system , ground state , physics , modulation (music) , zero (linguistics) , raman scattering , phase transition , population , condensed matter physics , atomic physics , materials science , molecular physics , quantum mechanics , acoustics , linguistics , philosophy , demography , sociology
We report a theoretical study of linear and nonlinear susceptibilities of Raman transition in a Λ-type three-level atomic system. In the Raman transition, if t he population of atoms is all prepared in the ground state which interacts with the control light, the linear susceptibility equals zero, while the third-order nonlinear susceptibility does not equal zero. By decreasing the nonradiative dec ay rate γ12 between the two ground states of the atoms, the Kerr no nlinear refractive index for cross-phase modulation can be significantly enhance d.