MINASYAN, Amalya; TROVATO, Clément; DEGERT, Jérôme; FREYSZ, Eric; BRASSELET, Etienne; ABRAHAM, Emmanuel

doi:10.1364/OL.42.000041

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http://creativecommons.org/licenses/by-sa/

MINASYAN, Amalya
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

TROVATO, Clément
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

DEGERT, Jérôme
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Article de revue

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Optics Letters. 2017-01-01, vol. 42, n° 1, p. 41-44

Optical Society of America - OSA Publishing

Resumen en inglés

We propose a topological beam-shaping strategy of terahertz (THz) beams using geometric phase elements made of space-variant birefringent slabs. Quasi-monochromatic THz vortex beams are produced and characterized both in amplitude and phase from the reconstructed real-time two-dimensional imaging of the electric field. Nonseparable superpositions of such vortex beams are also obtained and characterized by two-dimensional polarimetric analysis. These results emphasize the versatility of the spin-orbit electromagnetic toolbox to prepare on-demand structured light endowed with polarization-controlled orbital angular momentum content in the THz domain, which should find many uses in future THz technologies.< Leer menos

Palabras clave en inglés

Terahertz imaging

Optical vortices

Polarization

Phase modulation

DOI

http://dx.doi.org/10.1364/OL.42.000041

Proyecto ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

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Centros de investigación

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798