Journal ArticleDOI
Conical Forward THz Emission from Femtosecond-Laser-Beam Filamentation in Air
Ciro d'Amico,Aurélien Houard,Michel Franco,Bernard Prade,André Mysyrowicz,Arnaud Couairon,Vladimir Tikhonchuk +6 more
TLDR
A strong forward directed THz emission from femtosecond laser filaments in air is attributed to a transition-Cherenkov emission from the plasma space charge moving behind the ionization front at light velocity.Abstract:
We attribute a strong forward directed THz emission from femtosecond laser filaments in air to a transition-Cherenkov emission from the plasma space charge moving behind the ionization front at light velocity. Distant targets can be easily irradiated by this new source of THz radiation.read more
Citations
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Journal ArticleDOI
Curved Plasma Channel Generation Using Ultraintense Airy Beams
Pavel Polynkin,Miroslav Kolesik,Jerome V. Moloney,Georgios A. Siviloglou,Demetrios N. Christodoulides +4 more
TL;DR: The experimental observation of curved plasma channels generated in air using femtosecond Airy beams, where the tightly confined main intensity feature of the axially nonsymmetric laser beam propagates along a bent trajectory, leaving a curved plasma channel behind.
Journal ArticleDOI
Coherent control of terahertz supercontinuum generation in ultrafast laser–gas interactions
TL;DR: In this paper, the fundamental and second-harmonic fields of an ultrafast laser in any one of a number of materials can be used to generate radiation at terahertz frequencies.
Journal ArticleDOI
Broadband THz emission from gas plasmas induced by femtosecond optical pulses: From fundamentals to applications
TL;DR: In this paper, the authors review the generation of broadband THz radiation from femtosecond photo-induced gas plasmas, with an emphasis on the highly efficient AC-bias case where the plasma is generated and driven by a superposition of fundamental and second-harmonic optical fields.
Journal ArticleDOI
Physics and applications of atmospheric nonlinear optics and filamentation
TL;DR: Filamentation is a non-linear propagation regime specific of ultrashort and ultraintense laser pulses in the atmosphere that Typical applications include remote sensing of atmospheric gases and aerosols, lightning control, laser-induced spectroscopy, coherent anti-stokes Raman scattering, and the generation of sub-THz radiation.
Journal ArticleDOI
Intense terahertz radiation and their applications
Hassan A. Hafez,Hassan A. Hafez,X. Chai,A. Ibrahim,Sudipta Mondal,Denis Ferachou,Xavier Ropagnol,Tsuneyuki Ozaki +7 more
TL;DR: In this paper, the authors present a review of the development and application of intense terahertz (THz) sources, including photoconductive antennas (PCAs), optical rectification sources (ORS), DAST sources and relativistic laser-plasma sources.
References
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Journal ArticleDOI
Femtosecond filamentation in transparent media
Arnaud Couairon,André Mysyrowicz +1 more
TL;DR: In this paper, the main aspects of ultrashort laser pulse filamentation in various transparent media such as air (gases), transparent solids and liquids are introduced and discussed.
Journal ArticleDOI
Intense terahertz pulses by four-wave rectification in air
D. J. Cook,Robin M. Hochstrasser +1 more
TL;DR: A new four-wave rectification method for the generation of intense, ultrafast terahertz pulses from gases that is sensitive to the relative phases of the fundamental and second-harmonic pulses.
Journal ArticleDOI
White-light filaments for atmospheric analysis.
Jérôme Kasparian,M. Rodriguez,G. Méjean,Jin Yu,E. Salmon,H. Wille,R. Bourayou,S. Frey,Y.-B. André,André Mysyrowicz,R. Sauerbrey,Jean-Pierre Wolf,Ludger Wöste +12 more
TL;DR: The mobile femtosecond-terawatt laser system, Teramobile, has been constructed to study the applications of white-light and nonlinear light detection and ranging applications for atmospheric trace-gas remote sensing or remote identification of aerosols.
Journal ArticleDOI
A wideband coherent terahertz spectroscopy system using optical rectification and electro‐optic sampling
TL;DR: In this paper, a scheme for exploiting the nonresonant second-order nonlinearities in electrooptic media to extend the bandwidth of coherent spectroscopy in the far-infrared using ultrafast laser pulses was presented.
Journal ArticleDOI
Biomedical applications of terahertz technology
E. Pickwell,Vincent P. Wallace +1 more
TL;DR: In this paper, the development of terahertz (THz) technology and a typical system used in biomedical applications is described, considering applications ranging from THz spectroscopy of crystalline drugs to THz imaging of skin cancer.