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Opt Lett. 2012 May 1;37(9):1430-2. doi: 10.1364/OL.37.001430.

Millijoule laser pulse delivery for spark ignition through kagome hollow-core fiber.

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GPPMM Group, Xlim-UMR 7252 Université de Limoges/CNRS, Limoges, France.


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.

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