Open AccessDouble optical gating for generating high flux isolated attosecond pulses in the soft X-ray regime
Author(s) -
Jie Li,
Andrew Chew,
Shuyuan Hu,
James White,
Xiaoming Ren,
Seunghwoi Han,
Yanchun Yin,
Yan Wang,
Yi Wu,
Zenghu Chang
Publication year - 2019
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.27.030280
Subject(s) - attosecond , gating , optics , streaking , physics , harmonics , high harmonic generation , extreme ultraviolet , frequency resolved optical gating , polarization (electrochemistry) , lens (geology) , ultrashort pulse , laser , femtosecond pulse shaping , voltage , physiology , chemistry , quantum mechanics , biology
Double optical gating (DOG) technique was implemented with a two-cycle, 1.7 µm driving field to generate isolated attosecond pulses in the 100-250 eV spectrum range. The strong ellipticity dependency of the high harmonics from the 1.7 µm driving field makes polarization based gating method very efficient. When a second harmonic (SH) field is introduced, complete gating can be achieved with less ionization from the leading edge of the driving field, which yields supercontinua with a pulse energy of 0.3 nJ. We perform an attosecond streaking measurement to confirm the generation of isolated attosecond pulses.