Generation of largely elliptically polarized terahertz radiation from laser-induced plasma
Author(s) -
Honggeng Wang,
Na Li,
Ya Bai,
Peng Liu,
Zhanshan Wang,
Chengpu Liu
Publication year - 2017
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.25.030987
Subject(s) - optics , elliptical polarization , terahertz radiation , polarization (electrochemistry) , physics , circular polarization , radiation , laser , linear polarization , plasma , radiant intensity , chemistry , microstrip , quantum mechanics
A novel all-optical control scheme is proposed to continuously tune the THz radiation polarization, where the driving laser is based on a three-pulse configuration with adjustable time delays or intensity ratio. With this scheme, not only is the circularly polarized THz radiation realized, the continuous tuning from circular polarization to linear polarization can also be obtained conveniently just by adjusting time delays or intensity ratio. Moreover, the left or the right chirality of THz radiation can be transformed between each other with suitable time delays.
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