skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Line shape of a transition between two levels in a three-level {Lambda} configuration

Abstract

We report on our study of the line shape of a transition between two levels in a three-level {Lambda} configuration. By using Poisson statistics under the assumption that the atom stays in a two-level steady state before it is optically pumped to the reservoir state, we arrive at a simple analytic expression for the line shape of a three-level atom. This expression reveals a new type of saturation in the time domain, which is conceptually different from that of power-broadening in a two-level atom. It can also be used as a basis for more complicated situations of Doppler-broadened gaseous samples or pump-and-probe spectroscopy. We tested the theory experimentally in an ideal situation of slow pulsed {sup 85}Rb atoms and found excellent agreement. Application to measurements of a branching ratio or a Franck-Condon factor of a diatomic molecule is discussed.

Authors:
; ;  [1]
  1. Department of Physics, Korea University, Seoul 136-713 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22068687
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; BRANCHING RATIO; RUBIDIUM 85; SATURATION; SPECTROSCOPY; STEADY-STATE CONDITIONS

Citation Formats

Han, Hyok Sang, Jeong, Ji Eun, and Cho, D. Line shape of a transition between two levels in a three-level {Lambda} configuration. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.032502.
Han, Hyok Sang, Jeong, Ji Eun, & Cho, D. Line shape of a transition between two levels in a three-level {Lambda} configuration. United States. doi:10.1103/PHYSREVA.84.032502.
Han, Hyok Sang, Jeong, Ji Eun, and Cho, D. Thu . "Line shape of a transition between two levels in a three-level {Lambda} configuration". United States. doi:10.1103/PHYSREVA.84.032502.
@article{osti_22068687,
title = {Line shape of a transition between two levels in a three-level {Lambda} configuration},
author = {Han, Hyok Sang and Jeong, Ji Eun and Cho, D.},
abstractNote = {We report on our study of the line shape of a transition between two levels in a three-level {Lambda} configuration. By using Poisson statistics under the assumption that the atom stays in a two-level steady state before it is optically pumped to the reservoir state, we arrive at a simple analytic expression for the line shape of a three-level atom. This expression reveals a new type of saturation in the time domain, which is conceptually different from that of power-broadening in a two-level atom. It can also be used as a basis for more complicated situations of Doppler-broadened gaseous samples or pump-and-probe spectroscopy. We tested the theory experimentally in an ideal situation of slow pulsed {sup 85}Rb atoms and found excellent agreement. Application to measurements of a branching ratio or a Franck-Condon factor of a diatomic molecule is discussed.},
doi = {10.1103/PHYSREVA.84.032502},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}