Journal Article

PUBDB-2020-00937

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Description of spatio-temporal couplings from heat-induced compressor grating deformation

Leroux, V.CFEL*Extern*DESY* ; Eichner, T. (Corresponding author)CFEL*Extern* ; Maier, A.CFEL*Extern*DESY*

2020
Soc. Washington, DC

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Please use a persistent id in citations: doi:10.1364/OE.386112  doi:10.3204/PUBDB-2020-00937

Abstract: High average power high-intensity laser systems can suffer from a heat-induced deformation of the final compressor gratings, which introduces wavefront aberrations and spatio-temporal couplings to the pulse. Here, we use a simple numerical description, that was first introduced by Li et al. (Appl. Phys. Express, 10, 102702, 2017 and Optics Express, 26, 8453, 2018), to calculate the resulting degradation of the peak intensity and the 3-dimensional deformation of the laser pulse as a function of average power, and verify the results using experimental data. For a typical 100 TW-class laser we find that non-negligible pulse distortions can occur at an average power as low as 2.7 Watts. An open source implementation of our numerical description is available for researchers to estimate the effects of spatio-temporal couplings for their specific laser configuration.

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Contributing Institute(s):

1. Laser für Plasmabeschleunigung (MLS)
2. Uni Hamburg / Experimentalphysik (UNI/EXP)
3. UNI/EXP (CFEL-LUX)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2020

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