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arXiv · 1108.1875

Non-diffracting Optical Beams in a Three-level Raman System

T. N. Dey·J. Evers
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Abstract

Diffractionless propagation of optical beams through atomic vapors is investigated. The atoms in the vapor are operated in a three-level Raman configuration. A suitably chosen control beam couples to one of the transitions, and thereby creates a spatially varying index of refraction modulation in the warm atomic vapor for a probe beam which couples to the other transition in the atoms. We show that a Laguerre-Gaussian control beam allows to propagate single Gaussian probe field modes as well as multi-Gaussian modes and non-Gaussian modes over macroscopic distances without diffraction. This opens perspectives for the propagation of arbitrary images through warm atomic vapors.

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T. N. Dey, J. Evers. 2011-08-09. Non-diffracting Optical Beams in a Three-level Raman System. https://doi.org/10.1103/physreva.84.043842

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