Article Dans Une Revue Applied Physics Letters Année : 2025

Frequency-multiplexed terahertz multiple vortex beam generation

Résumé

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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Dates et versions

hal-05079416 , version 1 (26-05-2025)

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Yu Tokizane, Mathias Hedegaard Kristensen, Seigo Ohno, Jérôme Degert, Eric Freysz, et al.. Frequency-multiplexed terahertz multiple vortex beam generation. Applied Physics Letters, 2025, 126 (19), pp.1911006. ⟨10.1063/5.0261433⟩. ⟨hal-05079416⟩
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