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

• Published in: Laser physics letters Vol. 7; no. 7; pp. 517 - 521
• Main Authors: Wang, T.-J., Daigle, J.-F., Chen, Y., Marceau, C., Théberge, F., Châteauneuf, M., Dubois, J., Chin, S.L.
• Format: Journal Article
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.07.2010; WILEY‐VCH Verlag; Wiley
• 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; femtosecond laser filamentation; THz range; Radiation sources; Fluorescence; fs range; Filamentation; Pulsed lasers; Nonlinear optics; THz emission
• ISSN: 1612-2011; 1612-202X
• DOI: 10.1002/lapl.201010020

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)