Spectrum of resonance fluorescence excited by an evanescent wave at a gas-solid interface

Vladimir G. Bordo

doi:10.1117/12.180839

21 July 1994 Spectrum of resonance fluorescence excited by an evanescent wave at a gas-solid interface

Vladimir G. Bordo

Proceedings Volume 2125, Laser Techniques for Surface Science; (1994) https://doi.org/10.1117/12.180839
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

We present the results of a theoretical investigation of the fluorescence spectrum from the gas of two-level atoms strongly driven by an evanescent wave (EW). The mean time-of-flight of atoms across the EW is supposed to be less than the relaxation times in the gas volume. Assuming the atomic absorption line to be Doppler-broadened we analyze two specific cases: (1) the atoms over the whole Doppler contour are excited by the EW in the adiabatic-following regime and (2) the EW 'burns out the hole' inside the absorption line. In case (1) in addition to the well- known Mollow triplet the line at the atomic transition frequency appears due to the transient behavior of the atoms departing the surface. In case (2) the spectrum has a sub-Doppler structure sensitive to the type of the atom-surface scattering (diffuse, specular or inelastic). In both cases the spectrum depends on the sticking probability and phases of the scattering in the ground and excited states.

Citation Download Citation

Vladimir G. Bordo "Spectrum of resonance fluorescence excited by an evanescent wave at a gas-solid interface", Proc. SPIE 2125, Laser Techniques for Surface Science, (21 July 1994); https://doi.org/10.1117/12.180839

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