Open AccessHigh-contrast, high-brightness ultraviolet laser system
Author(s) -
Barnabás Gilicze,
Zsolt Homik,
S. Szatmári
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.017377
Subject(s) - optics , laser , amplified spontaneous emission , amplifier , materials science , brightness , pulse duration , regenerative amplification , ultraviolet , excimer laser , optoelectronics , physics , optical amplifier , cmos
In this paper, improved operation of a high-contrast, high-brightness ultraviolet laser system is described. The laser system is based on a conventional short-pulse dye/excimer design, modified to contain 3 KrF excimer short-pulse amplifiers and the recently developed nonlinear Fourier-filtering stage for contrast improvement. The final amplifier accepts a beam size of ~4x4 cm 2 , producing 100 mJ energy of short-pulses using a two-beam interferometric multiplexing setup. Temporal measurements of the output showed positively chirped pulses of ~700 fs duration, beside a focusability of ~2 times the diffraction limit. Amplified spontaneous emission-as the only source of the temporal background-results in a focused intensity contrast of >10 12 in the entire temporal window. These unique parameters give access to laser-matter interaction experiments above 10 19 W/cm 2 intensity at 248 nm.