Applied Physics Letters

Frequency-multiplexed terahertz multiple vortex beam generation

Y Yu Tokizane (Institute of Post-LED Photonics, Tokushima University 1 , 2-1 Minami-Josanjima, Tokushima 770-8506,) M Mathias Hedegaard Kristensen (CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,) S Seigo Ohno (Department of Physics, Graduate School of Science, Tohoku University 3 , Sendai 980-8578,) J Jérôme Degert (CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,) E Eric Freysz (CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,) E Etienne Brasselet (CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,) T Takeshi Yasui (Institute of Post-LED Photonics, Tokushima University 1 , 2-1 Minami-Josanjima, Tokushima 770-8506,) E Emmanuel Abraham (CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,)

Abstract

We propose a simple method to generate a frequency-multiplexed terahertz multiple vortex beam using a spiral phase plate and a metallic mask. Using a broadband terahertz source, we experimentally demonstrate the conversion of a terahertz Gaussian beam into a frequency-multiplexed single or multiple vortex beam with topological charges ranging from 1 to 3, which is supported by simulations. This multifunctional device opens new possibilities for high-speed THz communication, information processing, and high-efficiency terahertz wavefront manipulation devices.

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Article Details

Volume / Issue Vol. 126, Issue 19
Published May 12, 2025
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics
ISSN: 0003-6951 Physical Sciences

Authors (8)

Y

Yu Tokizane

Institute of Post-LED Photonics, Tokushima University 1 , 2-1 Minami-Josanjima, Tokushima 770-8506,

M

Mathias Hedegaard Kristensen

CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,

S

Seigo Ohno

Department of Physics, Graduate School of Science, Tohoku University 3 , Sendai 980-8578,

J

Jérôme Degert

CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,

E

Eric Freysz

CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,

E

Etienne Brasselet

CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,

T

Takeshi Yasui

Institute of Post-LED Photonics, Tokushima University 1 , 2-1 Minami-Josanjima, Tokushima 770-8506,

E

Emmanuel Abraham

CNRS LOMA, UMR 5798, Bordeaux University 2 , Talence,

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