Joule-Class Ultrafast Thin-Disk Multipass Amplifier with Kilohertz Repetition Rate for Applications in Atmospheric Research

Clemens Herkommer, Peter Krötz, Robert Jung, Sandro Klingebiel, Christoph Wandt, Robert Bessing, Pierre Walch, Thomas Produit, Knut Michel, Dominik Bauer, Reinhard Kienberger, Thomas Metzger
2020 Optics Express  
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 ∼ 2.1 at
more » ... the output. First results on horizontal long-range filament generation are presented.
doi:10.1364/oe.404185 pmid:33114900 fatcat:hcrb4rmlmbgidm44cmwzfv6kvq