Open AccessGeneration of isolated circularly polarized attosecond pulses by three-color laser field mixing
Author(s) -
Renzhi Shao,
Chunyang Zhai,
Yinfu Zhang,
Ning Sun,
Wei Cao,
Pengfei Lan,
Peixiang Lu
Publication year - 2020
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.388480
Subject(s) - optics , supercontinuum , physics , attosecond , laser , electric field , high harmonic generation , circular polarization , pulse (music) , ultrashort pulse , optical fiber , quantum mechanics , detector , photonic crystal fiber , microstrip
We propose and theoretically demonstrate a method to generate the circularly polarized supercontinuum with three-color electric fields. The three-color field is synthesized from an orthogonally polarized two-color (OTC) laser field and an infrared gating field. All driving pulse durations are extended to 40 fs. We demonstrate that the three-color field imposes curved trajectories for ionized electrons and extends the time interval between each harmonic emitting. Through adjusting intensity ratios among three components of the driving field, a nearly circular isolated attosecond pulse can be generated.