Wavelength scaling of terahertz generation by gas ionization

Matteo Clerici; Marco Peccianti; Bruno E. Schmidt; Lucia Caspani; Mostafa Shalaby; Mathieu Giguère; Antonio Lotti; Arnaud Couairon; François Légaré; Tsuneyuki Ozaki; Daniele Faccio; Roberto Morandotti

doi:10.1103/PhysRevLett.110.253901

Wavelength scaling of terahertz generation by gas ionization

Matteo Clerici^*, Marco Peccianti, Bruno E. Schmidt, Lucia Caspani, Mostafa Shalaby, Mathieu Giguère, Antonio Lotti, Arnaud Couairon, François Légaré, Tsuneyuki Ozaki, Daniele Faccio, Roberto Morandotti

^*Corresponding author for this work

Institute Of Photonics

Research output: Contribution to journal › Article › peer-review

382 Citations (Scopus)

Abstract

Low-frequency currents induced by ultrashort laser-driven ionization can emit extremely broadband, single-cycle terahertz pulses. We present a model that predicts a strong wavelength dependence of the THz emission in good agreement with our experimental study. This reveals that the combined effects of plasma currents rising proportionally to the square of the pump wavelength and wavelength-dependent focusing conditions lead to 30 times higher THz emission at 1800 nm compared to an 800 nm wavelength. Unrivaled single-cycle electric field strengths of 4.4 MV/cm are achieved with this compact table-top setup.

Original language	English
Article number	253901
Number of pages	5
Journal	Physical Review Letters
Volume	110
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.110.253901
Publication status	Published - 17 Jun 2013

Keywords

electric field strength
experimental studies
focusing conditions
low-frequency currents
pump wavelength
single-cycle terahertz pulse
teraherts generation
wavelength dependence

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10.1103/PhysRevLett.110.253901

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title = "Wavelength scaling of terahertz generation by gas ionization",

abstract = "Low-frequency currents induced by ultrashort laser-driven ionization can emit extremely broadband, single-cycle terahertz pulses. We present a model that predicts a strong wavelength dependence of the THz emission in good agreement with our experimental study. This reveals that the combined effects of plasma currents rising proportionally to the square of the pump wavelength and wavelength-dependent focusing conditions lead to 30 times higher THz emission at 1800 nm compared to an 800 nm wavelength. Unrivaled single-cycle electric field strengths of 4.4 MV/cm are achieved with this compact table-top setup.",

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AU - Clerici, Matteo

AU - Peccianti, Marco

AU - Schmidt, Bruno E.

AU - Caspani, Lucia

AU - Shalaby, Mostafa

AU - Giguère, Mathieu

AU - Lotti, Antonio

AU - Couairon, Arnaud

AU - Légaré, François

AU - Ozaki, Tsuneyuki

AU - Faccio, Daniele

AU - Morandotti, Roberto

PY - 2013/6/17

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AB - Low-frequency currents induced by ultrashort laser-driven ionization can emit extremely broadband, single-cycle terahertz pulses. We present a model that predicts a strong wavelength dependence of the THz emission in good agreement with our experimental study. This reveals that the combined effects of plasma currents rising proportionally to the square of the pump wavelength and wavelength-dependent focusing conditions lead to 30 times higher THz emission at 1800 nm compared to an 800 nm wavelength. Unrivaled single-cycle electric field strengths of 4.4 MV/cm are achieved with this compact table-top setup.

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Wavelength scaling of terahertz generation by gas ionization

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Keywords

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