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Title: Conical fluorescence emission from sodium vapor excited with tunable femtosecond light pulses

Abstract

An experimental and theoretical investigation is made of the angular spectrum of a near-resonant femtosecond laser pulse propagating through sodium vapor. A directional fluorescence emission corresponding to single-photon sodium transition 3S{yields}3P{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2,3} at {sub {approx}}{sub sol{approx}} at {sub 2} has been registered for the pump wavelength ranging from 540 to 605 nm. It is found that such emission can be detected under the conditions of single-photon (enhanced by two-photon) resonance of pump frequency with relevant atomic states. Theoretical treatment of the field-matter interaction by means of the nonperturbative (semiclassical) approach revealed conical components of the cylindrically symmetric beam spectrum originating both from the fluorescence induced by coherent atomic polarization and four-wave mixing.

Authors:
;  [1]
  1. Laser Research Center, Vilnius University, Sauletekio 10, Vilnius LT-10223 (Lithuania)
Publication Date:
OSTI Identifier:
20982399
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.033808; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ENERGY-LEVEL TRANSITIONS; FLUORESCENCE; FREQUENCY MIXING; INTERACTIONS; LASER RADIATION; MULTI-PHOTON PROCESSES; PHOTON-ATOM COLLISIONS; PHOTONS; POLARIZATION; PULSES; SEMICLASSICAL APPROXIMATION; SODIUM; SPECTRA; VAPORS; WAVE PROPAGATION; WAVELENGTHS

Citation Formats

Vaicaitis, V., and Gaizauskas, E. Conical fluorescence emission from sodium vapor excited with tunable femtosecond light pulses. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.033808.
Vaicaitis, V., & Gaizauskas, E. Conical fluorescence emission from sodium vapor excited with tunable femtosecond light pulses. United States. doi:10.1103/PHYSREVA.75.033808.
Vaicaitis, V., and Gaizauskas, E. Thu . "Conical fluorescence emission from sodium vapor excited with tunable femtosecond light pulses". United States. doi:10.1103/PHYSREVA.75.033808.
@article{osti_20982399,
title = {Conical fluorescence emission from sodium vapor excited with tunable femtosecond light pulses},
author = {Vaicaitis, V. and Gaizauskas, E.},
abstractNote = {An experimental and theoretical investigation is made of the angular spectrum of a near-resonant femtosecond laser pulse propagating through sodium vapor. A directional fluorescence emission corresponding to single-photon sodium transition 3S{yields}3P{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2,3} at {sub {approx}}{sub sol{approx}} at {sub 2} has been registered for the pump wavelength ranging from 540 to 605 nm. It is found that such emission can be detected under the conditions of single-photon (enhanced by two-photon) resonance of pump frequency with relevant atomic states. Theoretical treatment of the field-matter interaction by means of the nonperturbative (semiclassical) approach revealed conical components of the cylindrically symmetric beam spectrum originating both from the fluorescence induced by coherent atomic polarization and four-wave mixing.},
doi = {10.1103/PHYSREVA.75.033808},
journal = {Physical Review. A},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}