Low chromatic Fresnel lens for broadband attosecond XUV pulse applications

摘要: Fresnel zone plates show a great potential in achieving high spatial resolution imaging or focusing for XUV and soft/hard X-ray radiation, however they are usually strictly monochromatic due to strong chromatic dispersion thus do not support broad radiation spectra, preventing their application attosecond pulses. Here we report on the design theoretical simulations based of an achromatic hybrid optics combining both, refractive diffractive lens one optical element. We able by calculation that along axis can be greatly reduced compared standard plate while preserving temporal structure pulses at focus.