title: 1.1 MW peak-power, 7 W average-power, high-spectral-brightness, diffraction-limited pulses from a photonic crystal fiber amplifier.
abstract: We report a large-core, Yb-doped photonic crystal fiber amplifier generating diffraction-limited (M2 = 1.04), approximately 0.45 ns, approximately 8 GHz linewidth pulses with energies of 540 microJ, peak power in excess of 1.1 MW, and average power of approximately 7.2 W at a repetition rate of 13.4 kHz. The pulse peak spectral brightness exceeds 10 kW/(sr Hz cm2) and is the highest generated by a fiber source, to our knowledge.
authors.affiliation: Aculight Corporation, Bothell, Washington 98011, USA. Fabio.diteodoro@aculight.com
authors.forename: Fabio
authors.initials: F
authors.lastname: Di Teodoro
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Brooks