Phys. Rev. Lett. 89, 047401 (2002) [4 pages]Kerr-Like Nonlinearity Induced via Terahertz Generation and the Electro-Optical Effect in Zinc Blende CrystalsReceived 11 February 2002; published 2 July 2002 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. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.047401
DOI:
10.1103/PhysRevLett.89.047401
PACS:
78.20.Jq, 42.65.Re
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