Spectrally resolved wave-mixing between near- and far-infrared pulses in gas

Clerici, M. et al. (2013) Spectrally resolved wave-mixing between near- and far-infrared pulses in gas. New Journal of Physics, 15(12), 125011. (doi: 10.1088/1367-2630/15/12/125011)

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We investigate the nonlinear wave-mixing in gases between intense, short optical pulses and long-wavelength fields (mid infrared and terahertz). We show numerically that the beating between the sum- and difference-frequency generation components can be isolated in the spectrogram of the interaction, and can be used to sample the electric field oscillations of the long-wavelength pulses. This, in turn, could be employed as a possible characterization method that provides information on the real electric field amplitude. Our numerical model is supported by spectrally resolved measurements of the four-wave mixing signals obtained from the interaction of intense, single-cycle terahertz fields (λ > 15 μm) and optical pulses (λ  800 nm, 50 fs duration) in air.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Clerici, Professor Matteo and Faccio, Professor Daniele
Authors: Clerici, M., Faccio, D., Caspani, L., Peccianti, M., Yaakobi, O., Schmidt, B. E., Shalaby, M., Vidal, F., Légaré, F., Ozaki, T., and Morandotti, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
College of Science and Engineering > School of Physics and Astronomy
Journal Name:New Journal of Physics
Publisher:Institute of Physics Publishing Ltd.
ISSN (Online):1367-2630
Copyright Holders:Copyright © 2013 Publishing Ltd and Deutsche Physikalische Gesellschaft
First Published:First published in New Journal of Physics 15:125011
Publisher Policy:Reproduced under a Creative Commons License

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