Nonlinear selective reflection spectroscopy of V‐type atomic system at the gas‐solid interface |
| |
| Authors: | Tengfei Meng Zhonghua Ji Dianqiang Su Yanting Zhao Liantuan Xiao Suotang Jia |
| |
| Affiliation: | 1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;2. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China |
| |
| Abstract: | 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. |
| |
| Keywords: | Coherence effect Gas‐solid interface Nonlinear optics Saturation effect Selective reflection spectroscopy Spectral lineshape |
|
|
