Volume 115, Number 6, September 2016
|Number of page(s)||6|
|Section||Atomic, Molecular and Optical Physics|
|Published online||04 November 2016|
Hyperfine dipole-dipole broadening of selective reflection spectroscopy at the gas-solid interface
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University - Taiyuan 030006, China and Collaborative Innovation Center of Extreme Optics, Shanxi University - Taiyuan, Shanxi 030006, China
Received: 17 August 2016
Accepted: 12 October 2016
We theoretically and experimentally investigate hyperfine dipole-dipole broadening in the selective reflection (SR) spectroscopy at the gas-solid interface with the atomic density of 1014–1015 cm−3. The two-level SR theory considering pump beam and dipole-dipole interaction between excited-state atom and ground-state atom is presented. The numerical simulation of the SR spectrum is in agreement with experimental results. The reduction of spectral width is observed by introducing a pump beam which is an effective technique to improve the resolution of spectroscopy. We analyze the dependence of dipole-dipole broadening on atomic density and pump beam power. This study is helpful for the description of the SR spectroscopy at the gas-solid interface where the Doppler broadening is comparable with dipole-dipole broadening.
PACS: 32.70.Jz – Line shapes, widths, and shifts / 42.50.Ct – Quantum description of interaction of light and matter; related experiments / 42.62.Fi – Laser spectroscopy
© EPLA, 2016
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