Mode Control of Electro-Magnetic Pulses in the VHF Band

Abstract

We present experimental results for the controlled mitigation of electromagnetic pulses (EMP) produced in interactions of the 1PW high-power 30fs Ti:Sa laser VEGA-3 with matter. This study aims at the band of very high frequencies (VHF), notably hundreds of MHz, comprising the fundamental cavity modes of the rectangular VEGA-3 vacuum chamber. We demonstrate mode suppression by tailoring of the laser-produced space charge distribution.

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