Phase tunability of group velocity by modulated-pump-forced coherent population oscillations
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2009
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American Physical Society
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Abstract
We propose a technique to obtain slow and fast light propagations based on coherent population oscillations forced by a modulated pump. This mechanism produces an enhancement of 1 order of magnitude of the delay or advancement of light signals. The relative phase between the pumps to the signal fields is used as a knob for changing light propagation from ultraslow group velocities to negative group velocities. The experimental realization of the phenomenon was carried out in an erbium-doped fiber amplifier at room temperature.
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Received 12 July 2008
©2009 The American Physical Society