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

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posted on 2023-06-08, 16:42 authored by M Clerici, D Faccio, L Caspani, Marco Peccianti, O Yaakobi, B Schmidt, M Shalaby, F Vidal, F Légaré, T Ozaki, R Morandotti
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 (? > 15 µm) and optical pulses (? ? 800 nm, 50 fs duration) in air. © IOP Publishing and Deutsche Physikalische Gesellschaft.

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Publication status

  • Published

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  • Published version

Journal

New Journal of Physics

ISSN

1367-2630

Publisher

IOP Publishing

Issue

125011

Volume

15

Page range

1-13

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2014-05-27

First Open Access (FOA) Date

2023-05-25

First Compliant Deposit (FCD) Date

2014-05-24

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