Abstract

In this paper we demonstrate that the interaction of a traveling monochromatic light wave with atoms of a dilute gas in a cell whose length is much less than the diameter of the light beam can slow down the velocity of light. This slowing down is achieved by the specific transit relaxation of particles between walls of the cell (along the wave vector). For a two-level atomic system the group index is in the order of 103. The results show that such a slow down could be achieved by a single traveling light wave in a gas medium.

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