Generation of oblique Airy-OAM beam using reflective metasurface

Generation of oblique Airy-OAM beam using reflective metasurface

In this paper, we propose the generation of oblique Airy-OAM beam with reflective metasurface. A prototype is designed, fabricated and measured to launch the Airy-OAM beam directing at elevation angle of 20 deg. Both full-wave simulation and practical measurement show that the generated beam has aut...

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Veröffentlicht in:Optics communications 2024-01, Vol.550, p.129943, Article 129943
Hauptverfasser: Ma, Lihai, Yu, Shixing, Kou, Na
Format: Artikel
Sprache:eng
Schlagworte:
Airy beam
Oblique beam
Orbital angular momentum
Reflective metasurface
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Zusammenfassung:In this paper, we propose the generation of oblique Airy-OAM beam with reflective metasurface. A prototype is designed, fabricated and measured to launch the Airy-OAM beam directing at elevation angle of 20 deg. Both full-wave simulation and practical measurement show that the generated beam has auto-focus feature of Airy beam and spiral wave-front phase characteristic of OAM beam at the same time. The proposed oblique Airy-OAM beam generation method can be applied in the efficiency enhancement of near-field OAM communication systems.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2023.129943