Tests of laser-induced discharge of high dc voltage using high-power femtosecond UV pulses

Jean-Claude M. Diels; Patrick Rambo; Jens Schwarz; Luca Giuggioli; Jens Biegert; Vaclav Kubecek; Ralph Bernstein

doi:10.1117/12.375106

11 January 2000 Tests of laser-induced discharge of high dc voltage using high-power femtosecond UV pulses

Jean-Claude M. Diels, Patrick Rambo, Jens Schwarz, Luca Giuggioli, Jens Biegert, Vaclav Kubecek, Ralph Bernstein

Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000) https://doi.org/10.1117/12.375106
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

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.

Citation Download Citation

Jean-Claude M. Diels, Patrick Rambo, Jens Schwarz, Luca Giuggioli, Jens Biegert, Vaclav Kubecek, and Ralph Bernstein "Tests of laser-induced discharge of high dc voltage using high-power femtosecond UV pulses", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); https://doi.org/10.1117/12.375106

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