2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/135203The attosecond high harmonic pulses obtained from a long Ar-filled gas cell were characterized by two techniques - the reconstruction of attosecond beating by interference of two-photon transition (RABITT) and frequency-resolved optical gating (FROG) methods. The pulse durations obtained by RABITT and FROG methods agreed within 10 %.OpticsAtomic Physicstext