Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1865077 | Physics Letters A | 2007 | 5 Pages |
Abstract
We present a theoretical method for studying the transient linear and nonlinear optical property of a four-level atomic system with electromagnetically induced transparency. We start from equations of motion of density matrix that describe the response of atoms to probe and signal fields. We solve these equations by means of a method of multiple-scales. Different from previous studies, in our approach undepleted ground-state approximation is not used and significant differences from previous results are found.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Hui-jun Li, Chao Hang, Guoxiang Huang,