Ultrafast Nonlinear Laser Spectroscopy: The Role Of Inertia In The Femtosecond Dynamics Of The Optical Kerr Effect In Molecular Liquids

Geraldine A. Kenney-Wallace; Dale McMorrow; William T. Lotshaw; Constantinos Kalpouzos; Robert Kitchenham

doi:10.1117/12.966904

1 January 1987 Ultrafast Nonlinear Laser Spectroscopy: The Role Of Inertia In The Femtosecond Dynamics Of The Optical Kerr Effect In Molecular Liquids

Geraldine A. Kenney-Wallace, Dale McMorrow, William T. Lotshaw, Constantinos Kalpouzos, Robert Kitchenham

Author Affiliations +

Proceedings Volume 0742, Laser Applications to Chemical Dynamics; (1987) https://doi.org/10.1117/12.966904
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

The optical Kerr response of liquid CS₂, nitrobenzene and chlorobenzene is probed with 65 femtosecond optical pulses centered at 633 nm. We observe a clearly separable instan-taneous signal contribution in each system that is attributed to the incoherent (dephased) electronic part of the third order nonlinear susceptibility χ⁽³⁾. In addition to this instantaneous component, each system exhibits a multicomponent decay characterized by two components in CS₂ and three in the substituted benzenes. Finally, we note that the prevailing theory of the optical Kerr effect fails to describe the short time behavior of the measured response in each liquid, apparently requiring the inclusion of an inertial term in the equation of motion for the induced birefringence.

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Geraldine A. Kenney-Wallace, Dale McMorrow, William T. Lotshaw, Constantinos Kalpouzos, and Robert Kitchenham "Ultrafast Nonlinear Laser Spectroscopy: The Role Of Inertia In The Femtosecond Dynamics Of The Optical Kerr Effect In Molecular Liquids", Proc. SPIE 0742, Laser Applications to Chemical Dynamics, (1 January 1987); https://doi.org/10.1117/12.966904

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