Open AccessDirect reconstruction of two ultrashort pulses based on non-interferometric frequency-resolved optical gating
Author(s) -
Diego HidalgoRojas,
Ricardo RojasAedo,
Robert Wheatley,
Loïk Gence,
Birger Seifert
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.411597
Subject(s) - frequency resolved optical gating , optics , interferometry , spectrogram , pulse shaping , lens (geology) , physics , gating , femtosecond pulse shaping , pulse (music) , ultrashort pulse , amplitude , laser , computer science , detector , physiology , computer vision , biology
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.