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Phys Rev Lett. 2002 Jul 22;89(4):047401. Epub 2002 Jul 2.

Kerr-like nonlinearity induced via terahertz generation and the electro-optical effect in zinc blende crystals.

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  • 1Centre de Physique Moléculaire Optique et Hertzienne, Université Bordeaux I, 351, cours de la libération, 33405 Talence cedex, France.


A model is proposed to account for Kerr-like nonlinearity induced by femtosecond pulses via terahertz generation and electro-optical effect. This phenomenon, so far overlooked, is evidenced in a zinc blende single crystal with a heterodyne optical Kerr effect setup. The spectral evolution of this phenomenon as well as its noninstantaneous response character are reported. Its competition with a third-order optical Kerr effect is demonstrated.

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