Powerful 170-attosecond XUV pulses generated with few-cycle laser pulses and broadband multilayer optics

Abstract

Single 170-as extreme ultraviolet (XUV) pulses delivering more than 10 6 photons/pulse at ∼100 eV at a repetition rate of 3 kHz are produced by ionizing neon with waveform-controlled sub-5 fs near-infrared (NIR) laser pulses and spectrally filtering the emerging near-cutoff high-harmonic continuum with a broadband, chirped multilayer molybdenum-silicon (Mo/Si) mirror. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.