Plasma Mirrors for Cleaning Laser Pulses from the Infrared to the Ultraviolet

István B. Földes, Barnabás Gilicze, Zsolt Kovács, Sándor Szatmári

Research output: Conference article

Abstract

Ultrashort laser pulses are generally preceded by prepulses which - in case of high main pulse intensities - may generate preplasmas on solid surfaces, thus making the initial conditions for the interactions ambiguous. Infrared laser systems applied successfully, with high efficiency self-induced plasma mirrors for improving the contrast of the beam. Short wavelength laser beams however have a larger critical density in the plasma, and due to their deeper penetration the absorption is higher, the reflectivity, and the corresponding plasma mirror efficiency is lower. We show herewith that with carefully planned boundary conditions plasma mirrors can reach up to 70% efficiency even for KrF laser radiation. Our observations can be qualitatively explained by the classical Drude model. The high reflectivity allows the use of plasma mirrors even after the final amplification or before the last amplifier. Different arrangement proposals for its integration to our high power KrF laser system are given as well.

Original languageEnglish
Article number04001
JournalEPJ Web of Conferences
Volume167
DOIs
Publication statusPublished - jan. 9 2018
Event8th International Conference on Plasma Physics by Laser and Applications, PPLA 2017 - Messina, Italy
Duration: júl. 5 2017júl. 7 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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