Characterization of EUV Laser Beams by Ablation Imprints in PMMA Created at Varied Target–Focus Distances
2022
Abstract
Proper diagnostics of intense non-Gaussian EUV/x-ray laser beams is necessary for experimental data evaluation. The Nonlinear response function recovery (NoReFry) algorithm is a useful tool for such diagnostics exploiting the AFM morphology of ablated craters in PMMA created by a laser beam at varied fluences of laser pulses.
We present an extended NoReFry 2.0 algorithm combining the fluence scan method with the through focus z-scan - varied fluences at different sample-to-focus distances.