NONLINEAR EFFECTS OF THIRD-AND FIFTH-ORDER ON POLARIZATION BEATS IN A FOUR-LEVEL SYSTEM |
| |
| Authors: | Zhang Yan-peng Lu Ke-qing Wu Hong-cai Xu Jiao and Fu Pan-ming |
| |
| Affiliation: | Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; Institute of Physics Chinese Academy of Sciences, Beijing 100080, China |
| |
| Abstract: | We have employed second-order coherence function theory to study the nonlinear effects of third-and fifth-order on polarization beats in a four-level system (TPBFS and FPBFS). It is found that the different temporal behavior of the beat signal in TPBFS and FPBFS depends on the stochastic properties of the lasers and transverse relaxation rate of the transition. We have considered the cases that pump beams have either narrow band or broadband linewidth and found that for both cases a Doppler-free precision can be achieved in the measurement of the energy-level difference between two excited states which are dipolar forbidden from the ground state. We also discussed the spatiall modulation behavior of the beat signal. |
| |
| Keywords: | nonlinear effect polarization beat wave-mixing |
|
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
