Abstract
The Goos–Hänchen shift of the reflected beam in a standing-wave coupled electromagnetically induced transparency medium is investigated. We adopt the three-level system as a model of atomic media. Under the influence of two counterpropagating coupling fields, the incident beam is converted into a reflected one, with the Goos–Hänchen shift. We briefly discuss the rules for obtaining efficient reflection in such an atomic system, and carefully investigate the Goos–Hänchen shift and its dependence on the beam width of the incident field. Both the cases with and without Doppler broadening are considered. In order to provide a clearer physical picture on the large shift that could be realized, the concept of penetration depth is used to analyze the shift phenomenologically.
© 2015 Optical Society of America
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