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Temporal contrast control at the PHELIX petawatt laser facility by means of tunable sub-picosecond optical parametric amplification

Year: 2013
Type: article
Abstract: We report on the development of a preamplifier module for temporal contrast enhancement and control at petawatt-class lasers. The module is based on an ultrafast optical parametric amplifier (uOPA), which produces temporally clean pulses at the 60 μJ level for seeding a chirped pulse amplification (CPA) system, namely the petawatt facility PHELIX. The amplifier module allows for gain reduction in the following amplifiers, resulting in an attenuation of amplified spontaneous emission (ASE) by more than 4 orders of magnitude. Since the ASE of a CPA system linearly depends on the seeding energy, we were able to demonstrate a continuous variation of the temporal contrast by tuning the gain of the uOPA.
DOI: 10.1007/s00340-013-5714-9
Authors: F. Wagner, C. P. João, J. Fils, T. Gottschall, J. Hein, J. Körner, J. Limpert, M. Roth, T. Stöhlker, V. Bagnoud
Institutions: Technische Universität Darmstadt, Instituto Superior Técnico, Instituto de Plasmas e Fusão Nuclear, Grupo de Lasers e Plasmas, GSI Helmholtz Centre for Heavy Ion Research, Friedrich Schiller University Jena, Helmholtz Institute Jena
Language: English
Open Access status: hybrid
Estimated APC paid: $4,090
OpenAlex ID: W2005483086
FWCI: 3.767
Cites: 16
Cited by: 59
Related to: 10