Simultaneous measurement of real and imaginary parts of nonlinear susceptibility for the verification of the Kramers-Kronig relations in femtosecond spectroscopy

Hideaki Kanou; Takayoshi Kobayashi

Quantum Electronics and Laser Science Conference
OSA Technical Digest (Optica Publishing Group, 1999),
paper QThG17

Simultaneous measurement of real and imaginary parts of nonlinear susceptibility for the verification of the Kramers-Kronig relations in femtosecond spectroscopy

Hideaki Kanou and Takayoshi Kobayashi

Quantum Electronics and Laser Science Conference 1999

Baltimore, Maryland United States
23–26 May 1999
ISBN: 1-55752-571-4

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Poster Session (QThG)

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H. Kanou and T. Kobayashi, "Simultaneous measurement of real and imaginary parts of nonlinear susceptibility for the verification of the Kramers-Kronig relations in femtosecond spectroscopy," in Quantum Electronics and Laser Science Conference, P. Bucksbaum, R. Falcone, G. Agrawal, and Y. Yamamoto, eds., OSA Technical Digest (Optica Publishing Group, 1999), paper QThG17.

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Abstract

Recently, spectral interferometry has been developed to study the ultrafast dynamics in nonlinear materials and enables us to obtain both real and imaginary parts of nonlinear refractive index change which corresponds to the third-order nonlinear susceptibility.¹⁻⁴ They are related through the KK relations and many discussions were reported in nonlinear optical systems.^1,5 In time-resolved spectroscopy, the KK relations are not generally satisfied, however, we reported that the KK relations are strictly satisfied in the following special cases.

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