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Physical Review Letters
Volume 96, Number 6, 063902 (February 2006).

Nonlinear magneto-optical Bragg gratings

Fredrik Jonsson1 and Christos Flytzanis2

1Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland.
2Laboratoire Pierre Aigrain, Ecole Normale Superieure, 24 rue Lhomond, 75231-Paris Cedex 05, France.

Abstract

In magneto-optical gratings the magnetic dipolar coupling superimposed on the electric dipolar one introduces nonreciprocity and spectral discrimination between circular polarization states, measured by a Zeeman-like splitting of the photonic Bragg resonances. In a nonlinear regime the degree of nonreciprocity is modified by the photoinduced interplay of these splittings and their Stark-like shifts. We predict novel magneto-optical modulation schemes for switching between orthogonal circular polarization states of transmission or reflection operated by means of an intense linearly polarized optical pulse train.

Full text: PDF [256 kB] | DOI: 10.1103/PhysRevLett.96.063902

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