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OSA Advanced Photonics Congress

Beam steering using spatial OPA in Kerr media: a space-time analogy of parametric slow-light

Gil Fanjoux, Thibaut Sylvestre

Published Jan 1, 2012• 0 citations
Publisher

Abstract

In a way similar to an optical pulse that can be optically delayed via slow light propagation, we theoretically demonstrate that beam steering can be readily achieved using optical parametric amplification in Kerr-type nonlinear media.
DOI
10.1364/np.2012.ntu2d.8

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Subluminal and superluminal propagation of a light pulse in Kerr materials has been investigated. Group velocities as slow as much less than 1 mm per second to as fast as negative several thousands meters per second can easily be obtained in the Kerr medium, which possesses a large nonlinear refractive index and long relaxation time, such as Cr3+-doped alexandrite, ruby, and GdAlO3. The physical mechanism is the strong highly dispersive coupling between different frequency components of the pulse.