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

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.

8 pages, 7 figures

References in corpus (9)

• Extreme sub-wavelength atom localization via coherent population trapping
• Low-Light-Level Optical Interactions with Rubidium Vapor in a Photonic Bandgap Fiber
• Coherent Quantum Optical Control with Subwavelength Resolution
• Optical imaging beyond the diffraction limit via dark states
• Elimination, reversal, and directional bias of optical diffraction
• Elimination of the Diffraction of Arbitrary Images Imprinted on Slow Light
• Measurement of the separation between atoms beyond diffraction limit
• Localization of atomic ensembles via superfluorescence
• Measurement of distance and orientation of two atoms in arbitrary geometry

Cited by in corpus (12)

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• Optical cloning of arbitrary images beyond the diffraction limits
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• Steering, Splitting and Cloning of Optical Beam in a Coherently Driven Raman Gain System
• Image cloning beyond diffraction based on coherent population trapping in a hot Rubidium vapor
• Diffractionless image propagation and frequency conversion via four-wave mixing exploiting the thermal motion of atoms
• Four wave mixing based generation and control of light pulse
• Optimal pulse propagation in an inhomogeneously gas-filled hollow-core fiber
• Enhancement of image resolution beyond the diffraction-limit by interacting dark resonances
• Controlled light shaping via phase dependent electromagnetically induced transparency
• Kerr field induced tunable optical atomic waveguide
• Efficient diffraction control using a tunable active-Raman gain medium