High energy THz generation from meter-long two-color filaments in air

High energy THz emissions from meter‐long, twocolor femtosecond laser‐induced filament in air are demonstrated at a distance of over 10 m from the laser. The THz emission is linearly proportional to the N2 fluorescence inside the filaments under the same excitation condition; this provides a sensiti...

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Bibliographic Details
Published in:Laser physics letters 2010-07, Vol.7 (7), p.517-521
Main Authors: Wang, T.-J., Daigle, J.-F., Chen, Y., Marceau, C., Théberge, F., Châteauneuf, M., Dubois, J., Chin, S.L.
Format: Article
Language:English
Subjects:
Beam trapping, self-focusing and defocusing
self-phase modulation
Exact sciences and technology
femtosecond laser filamentation
fluorescence
Fundamental areas of phenomenology (including applications)
Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques
Infrared, submillimeter wave, microwave and radiowave sources
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Nonlinear optics
Optics
Physics
THz emission
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Summary:High energy THz emissions from meter‐long, twocolor femtosecond laser‐induced filament in air are demonstrated at a distance of over 10 m from the laser. The THz emission is linearly proportional to the N2 fluorescence inside the filaments under the same excitation condition; this provides a sensitive method to monitor the THz energy from a distance. (© 2010 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)
ISSN:1612-2011
1612-202X
DOI:10.1002/lapl.201010020