Milli-Joule laser pulse delivery for spark ignition through kagome hollow-core fiber

Benoît Beaudou (1) , Frédéric Gérôme (1) , Yingying Wang (1) , Meshaal Alharbi (2) , Tom Bradley (2) , Georges Humbert (1) , Jean-Louis Auguste (1) , Jean-Marc Blondy (1) , Fetah A. Benabid (1)

1 XLIM-PHOTONIQUE - PHOTONIQUE
2 University of Bath [Bath]

We report on power handling oriented design of kagome lattice hollow-core fiber and demonstrate through it for the first time nanosecond laser pulses induced spark ignition in a friendly manner. Two different core designs and transmission bands are investigated and evaluated. The energy threshold damage was measured to be in excess of the 10 mJ level and the output power density is approaching the TW/cm2 after focusing; demonstrating the outstanding ability of such fiber for high power delivery.

Domaines: Optique / photonique

Benoît Beaudou, Frédéric Gérôme, Yingying Wang, Meshaal Alharbi, Tom Bradley, et al.. Milli-Joule laser pulse delivery for spark ignition through kagome hollow-core fiber. Optics Letters, 2012, 37 (9), pp.1430. ⟨hal-00923832⟩