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 ∼ 2.1 at the output. First results on horizontal long-range filament generation are presented.
Highlights
During the past two decades, atmospheric research has been propelled by studies on laser filamentation, enabled by high energy ultrafast laser technology
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 lifetime of the free carriers in the plasma generated by the laser filaments is only short-lived on the order of
Summary
During the past two decades, atmospheric research has been propelled by studies on laser filamentation, enabled by high energy ultrafast laser technology. Pulse energies above 200 mJ [28,29] with multi-kilowatt average powers [30] and pulse durations as short as
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