title: 54  J pulses with 18  nm bandwidth from a diode-pumped chirped-pulse amplification laser system.
abstract: We report on results from the fully diode-pumped chirped-pulse amplification laser system Polaris. Pulses were amplified to a maximum energy of 54.2 J before compression. These pulses have a full width at half-maximum spectral bandwidth of 18 nm centered at 1033 nm and are generated at a repetition rate of 0.02 Hz. To the best of our knowledge, these are the most energetic broadband laser pulses generated by a diode-pumped laser system so far. Due to the limited size of our vacuum compressor, only attenuated pulses could be compressed to a duration of 98 fs containing an energy of 16.7 J, which leads to a peak power of 170 TW. These pulses could be focused to a peak intensity of 1.3×1021W/cm2. Having an ultra-high temporal contrast of 1012with respect to amplified spontaneous emission these laser pulses are well suited for high-intensity laser-matter experiments.
authors.forename: Marco
authors.initials: M
authors.lastname: Hornung
authors.forename: Hartmut
authors.initials: H
authors.lastname: Liebetrau
authors.forename: Sebastian
authors.initials: S
authors.lastname: Keppler
authors.forename: Alexander
authors.initials: A
authors.lastname: Kessler
authors.forename: Marco
authors.initials: M
authors.lastname: Hellwing
authors.forename: Frank
authors.initials: F
authors.lastname: Schorcht
authors.forename: Georg A
authors.initials: GA
authors.lastname: Becker
authors.forename: Maria
authors.initials: M
authors.lastname: Reuter
authors.forename: Jens
authors.initials: J
authors.lastname: Polz
authors.forename: Jörg
authors.initials: J
authors.lastname: Körner
authors.forename: Joachim
authors.initials: J
authors.lastname: Hein
authors.forename: Malte C
authors.initials: MC
authors.lastname: Kaluza