Nonlinear selective reflection spectroscopy of V-type atomic system at the gas-solid interface

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• 作者：Tengfei Meng ; Zhonghua Ji ; Dianqiang Su ; Yanting Zhao ; Liantuan Xiao and Suotang Jia
• 刊名：Annalen der Physik
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：528
• 期：6
• 页码：512-518
• 全文大小：462K
• ISSN：1521-3889

文摘

We theoretically present the nonlinear selective reflection spectroscopy of V-type atomic system at gas-solid interface in a pump-probe scheme. The saturation and coherence effects are distinguished by solving Liouville equation in the absence and presence of reduced density matrix element between the two excited levels. When the coherence effect exists, two peaks appear in reflection spectroscopy with asymmetry lineshape. We investigate the dependence of reflection spectroscopy on pump field intensity, frequency detuning and coherent decay rate induced by collision between atoms. The lineshape can be explained based on reflection spectroscopy contributed from atoms with negative (before collision) and positive (after collision) velocities, single-photon and two-photon processes. This study is helpful for investigating quantum coherence and dynamic processes of atoms at gas-solid interface.