Browsing by Author "Rojas-Aedo, Ricardo"

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    Direct reconstruction of two ultrashort pulses based on non-interferometric frequency-resolved optical gating
    (OSA - The Optical Society, 2021) Hidalgo-Rojas, Diego; Rojas-Aedo, Ricardo; Wheatley, Robert A.; Gence, Loik; Seifert, Birger
    © 2021 Optical Society of America.We describe a non-interferometric ultrashort-pulse measurement technique based on frequency-resolved optical gating (FROG) with which pulses can be reconstructed directly, i.e. non-iteratively. Two different FROG spectrograms are measured, which represent the only information required to reconstruct the amplitudes and phases of two independent input pulses. The direct reconstruction method is demonstrated with a single-shot FROG setup used to obtain the spectrograms generated from two synchronized input pulses. To demonstrate and determine the reconstruction quality for complex pulses, a programmable pulse shaper is used to modify the pulses sourced from a Kerr-lens mode-locked Ti:sapphire oscillator.