NDLI: Remote atmospheric breakdown using intense femtosecond laser pulses

Content Provider	IEEE Xplore Digital Library
Author	Ting, A. Alexeev, I. Gordon, D. Briscoe, E. Penano, J. Hubbard, R. Sprangle, P.
Copyright Year	2004
Description	Author affiliation: Div. of Plasma Phys., Naval Res. Lab., Washington, DC, USA (Ting, A.)
Abstract	Summary form only given. A remote atmospheric breakdown (RAB) induced by an intense laser pulse is a very rich source of ultraviolet (UV) and broadband visible light generated by various nonlinear and ionization processes. These radiation could provide the source for active remote sensing of environmentally hazardous components through spectroscopic detection and identification. The location of the RAB can be controlled when intense femtosecond laser pulses are used. The inherent broad bandwidths of the laser pulses allow a low-intensity negatively chirped laser pulse to be compressed in time due to the group velocity dispersion and focused transversely due to non-linear self-focusing. The rapid increase in the laser intensity near the focal region can cause ionization and harmonic generation in the UV and visible regimes. Proof of principle laboratory experiments are being performed at the Naval Research Laboratory on the generation of RAB and the spectroscopic detection of mock biological hazards. We have demonstrated pulse compression in long-distance atmospheric propagation, laser filamentation, harmonic generation, air breakdown, and induced fluorescence that are controlled by both the initial temporal chirp and the induced laser pulse mode structures. Preliminary experimental results will be presented.
Sponsorship	Plasma Sci. and Applications Committee of the IEEE Nuclear and Plasma Sci. Soc
File Size	66988
File Format	PDF
ISBN	0780383346
ISSN	07309244
DOI	10.1109/PLASMA.2004.1339675
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electric breakdown Optical pulses Optical pulse generation Pulse compression methods Member and Geographic Activities Board committees Ionization Spectroscopy Optical control Chirp Frequency conversion
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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