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Evanescent wave fluorescence spectra of Na atoms

Authors
Journal
Optics Communications
0030-4018
Publisher
Elsevier
Publication Date
Volume
137
Identifiers
DOI: 10.1016/s0030-4018(97)00010-2
Keywords
  • Atomic
  • Molecular And Plasma Physics

Abstract

Abstract Laser induced fluorescence of Na atoms excited inside the evanescent wave of a glass prism is spectrally resolved for the first time, showing a pronounced dependence of linewidth on the surface temperature in the temperature range of 293 K to 435 K. We are able to reproduce the measured fluorescence lines quantitatively by use of the perturbative density matrix theory. The good agreement between theory and experiment emphasizes the fact that the response of the gas to the evanescent field arises mainly from the atoms desorbing from the surface and is of nonlocal nature.

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