Remote triggering of air-gap discharge by a femtosecond laser filament and postfilament at distances up to 80 m

We experimentally observed laser-induced remote high-voltage discharge triggering between two needle electrodes with half-a-cm spacing. The was initiated by a 744-nm, 90-fs, 6-mJ laser pulse undergoing filamentation in air. For the direct voltage below self-breakdown threshold, of air-gap synchronized 10-Hz repetition rate and occurred 40 80 m propagation path. No guiding observed. registered simulated probability above 80% range 45–60 from output about 50% 60–80 m. decreases as postfilament hot spot diverges simultaneous increase stochastic beam wandering.