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Spectral line narrowing in a gas by atoms trapped in a standing light wave

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Abstract

This paper presents results of a theoretical analysis of a new method for eliminating the Doppler broadening of spectral lines and the broadening by the transit time of atoms through a light beam. The atomic motion in a one-dimensional standing wave is studied and the conditions for translational-to-vibrational motion transformation are found. The variation in the Doppler contour by the trapping effect is investigated. It is illustrated, in particular, that the width of the narrow peak at the line centre depends mainly on the finite transit time of the atoms through the light beam. Next it is shown that, by accumulating slow atoms in a three-dimensional standing wave, it is possible, in principle, to observe narrow peaks with their widths determined only by the natural line width. The possibility of experimentally detecting of the phenomenon is discussed.

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Authors and Affiliations

  1. Institute of Spectroscopy, Academy of Sciences USSR, Akademgorodok, 142092, Moscow, Podilskii Rayon, USSR

    V. S. Letokhov

  2. Physical Institute, Academy of Sciences Ukrainian SSR, Kiev, USSR

    B. D. Pavlik

Authors
  1. V. S. Letokhov
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  2. B. D. Pavlik
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Letokhov, V.S., Pavlik, B.D. Spectral line narrowing in a gas by atoms trapped in a standing light wave. Appl. Phys. 9, 229–237 (1976). https://doi.org/10.1007/BF00900610

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  • DOI: https://doi.org/10.1007/BF00900610

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