Electromagnetically induced transparency of the medium composed of atoms in thermal motion

We investigate electromagnetically induced transparency of a medium composed of N Lambda -type three-level atoms in thermal motion with an initial momentum distribution modelled by a Gaussian function. We treat atomic centre-of-mass motion as an independent degree of freedom and study the dependence...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2011-11, Vol.44 (21), p.215503-1-6
Main Authors: Qiu, Tianhui, Yang, Guojian
Format: Article
Language:English
Subjects:
Degrees of freedom
Effects of atomic coherence on propagation, absorption and amplification of light
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gaussian
Mathematical analysis
Mathematical models
Optics
Physics
Quantum optics
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Summary:We investigate electromagnetically induced transparency of a medium composed of N Lambda -type three-level atoms in thermal motion with an initial momentum distribution modelled by a Gaussian function. We treat atomic centre-of-mass motion as an independent degree of freedom and study the dependence of susceptibility on the thermal motion characterized by the width and centre of Gaussian momentum distribution. A larger width does not always lead to larger resonant absorption and if the probe and controlling fields copropagate in the degenerate and resonant cases, transparency can be obtained regardless of the thermal motion of the atoms.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/44/21/215503