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Proceedings Paper

Tests of laser-induced discharge of high dc voltage using high-power femtosecond UV pulses
Author(s): Jean-Claude M. Diels; Patrick Rambo; Jens Schwarz; Luca Giuggioli; Jens Biegert; Vaclav Kubecek; Ralph Bernstein
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Paper Abstract

Pulses of 500 fs or greater duration and several tens of millijoules at 248 nm are used to trigger discharges in air. We will discuss the influence of beam geometry, the minimum field strength that can be triggered, and the electrical discharge guiding properties. The latest measurements have concentrated on DC discharges in air at up to 200 kV. Thanks to a new technique of background free, single shot interferometry, 2D snapshots of the evolving plasma can be recorded. This will lead to further insight about the dynamics involved in the discharge process. The existing laser system is costly and difficult to use in the field. We will show however that similar performance can be achieved with a solid state laser and frequency conversion by nonlinear optics. Such a compact system can be tuned to cover the wavelength range from 240 nm to 350 nm.

Paper Details

Date Published: 11 January 2000
PDF: 9 pages
Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375106
Show Author Affiliations
Jean-Claude M. Diels, Univ. of New Mexico (United States)
Patrick Rambo, Univ. of New Mexico (United States)
Jens Schwarz, Univ. of New Mexico (United States)
Luca Giuggioli, Univ. of New Mexico (United States)
Jens Biegert, Univ. of New Mexico (United States)
Vaclav Kubecek, Czech Technical Univ. (Czech Republic)
Ralph Bernstein, Electric Power Research Institute (United States)

Published in SPIE Proceedings Vol. 3886:
High-Power Lasers in Energy Engineering
Kunioki Mima; Gerald L. Kulcinski; William J. Hogan, Editor(s)

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