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Title: Suppression effects in stimulated hyper-Raman emissions and parametric four-wave mixing in sodium vapor

Abstract

Experimental investigations of two-photon enhanced stimulated hyper-Raman and parametric four-wave-mixing emissions are described for tuning unfocused laser beams near two-photon resonance with 3{ital D} and 4{ital D} states in sodium vapor. Over wide ranges of vapor pressures, path lengths, and laser power densities, the gains for stimulated hyper-Raman (SHR) scattering and for parametric four-wave mixing (PFWM) can become very greatly reduced from values expected from simple considerations. The suppression of gain can arise from interferences produced at two-photon and three-photon resonances, and from ac Stark shifts produced by internally generated near-resonant fields. Quantitative comparisons are made between observed and theoretically predicted values for SHR and PFWM production. Of 12 predicted consequences of the interferences and Stark shifting on the nonlinear behavior, ten are demonstrated through the experiments.

Authors:
; ; ;  [1];  [2]
  1. Chemical Physics Section, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
  2. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125 (United States)
Publication Date:
OSTI Identifier:
7300876
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Journal Article
Journal Name:
Physical Review A. General Physics; (United States)
Additional Journal Information:
Journal Volume: 45:9; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 42 ENGINEERING; SODIUM; STIMULATED EMISSION; D STATES; FREQUENCY MIXING; LASER RADIATION; MULTI-PHOTON PROCESSES; RAMAN EFFECT; VAPORS; ALKALI METALS; ELECTROMAGNETIC RADIATION; ELEMENTS; EMISSION; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; FLUIDS; GASES; METALS; RADIATIONS; 664200* - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-); 426002 - Engineering- Lasers & Masers- (1990-)

Citation Formats

Garrett, W R, Moore, M A, Hart, R C, Payne, M G, and Wunderlich, R. Suppression effects in stimulated hyper-Raman emissions and parametric four-wave mixing in sodium vapor. United States: N. p., 1992. Web. doi:10.1103/PhysRevA.45.6687.
Garrett, W R, Moore, M A, Hart, R C, Payne, M G, & Wunderlich, R. Suppression effects in stimulated hyper-Raman emissions and parametric four-wave mixing in sodium vapor. United States. https://doi.org/10.1103/PhysRevA.45.6687
Garrett, W R, Moore, M A, Hart, R C, Payne, M G, and Wunderlich, R. Fri . "Suppression effects in stimulated hyper-Raman emissions and parametric four-wave mixing in sodium vapor". United States. https://doi.org/10.1103/PhysRevA.45.6687.
@article{osti_7300876,
title = {Suppression effects in stimulated hyper-Raman emissions and parametric four-wave mixing in sodium vapor},
author = {Garrett, W R and Moore, M A and Hart, R C and Payne, M G and Wunderlich, R},
abstractNote = {Experimental investigations of two-photon enhanced stimulated hyper-Raman and parametric four-wave-mixing emissions are described for tuning unfocused laser beams near two-photon resonance with 3{ital D} and 4{ital D} states in sodium vapor. Over wide ranges of vapor pressures, path lengths, and laser power densities, the gains for stimulated hyper-Raman (SHR) scattering and for parametric four-wave mixing (PFWM) can become very greatly reduced from values expected from simple considerations. The suppression of gain can arise from interferences produced at two-photon and three-photon resonances, and from ac Stark shifts produced by internally generated near-resonant fields. Quantitative comparisons are made between observed and theoretically predicted values for SHR and PFWM production. Of 12 predicted consequences of the interferences and Stark shifting on the nonlinear behavior, ten are demonstrated through the experiments.},
doi = {10.1103/PhysRevA.45.6687},
url = {https://www.osti.gov/biblio/7300876}, journal = {Physical Review A. General Physics; (United States)},
issn = {1050-2947},
number = ,
volume = 45:9,
place = {United States},
year = {1992},
month = {5}
}