Ultrafast Thin-Disk Multipass Amplifier With 720 Mj Operating At Kilohertz Repetition Rate For Applications In Atmospheric Research
OPTICS EXPRESS(2020)
Abstract
We present an ultrafast thin-disk based multipass amplifier operating at a wavelength of 1030 nm, designed for atmospheric research in the framework of the Laser Lightning Rod project. The CPA system delivers a pulse energy of 720 mJ and a pulse duration of 920 fs at a repetition rate of 1 kHz. The 240 mJ seed pulses generated by a regenerative amplifier are amplified to the final energy in a multipass amplifier via four industrial thin-disk laser heads. The beam quality factor remains similar to 2.1 at the output. First results on horizontal long-range filament generation are presented. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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Key words
kilohertz repetition rate,amplifier,atmospheric research,thin-disk
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