Multilevel axicon for perfect optical vortex generation

We present the fabrication of a beam shaper with 32 levels for the generation of nondiffractive optical fields representing quasi-Bessel beams of order zero. This optical element is designed for visible light (λ=633 nm) and fabricated using standard photolithography and a fine calibrated reactive io...

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Veröffentlicht in:EPJ Web of conferences 2019, Vol.215, p.2003
Hauptverfasser: Tudor, Rebeca, Kusko, Mihai, Kusko, Cristian, Avram, Andrei
Format: Artikel
Sprache:eng
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Zusammenfassung:We present the fabrication of a beam shaper with 32 levels for the generation of nondiffractive optical fields representing quasi-Bessel beams of order zero. This optical element is designed for visible light (λ=633 nm) and fabricated using standard photolithography and a fine calibrated reactive ion etching process. A large number of levels approximates a continuous conical surface so that the optical quality of the element is very good. It is investigated the possibility of generating perfect optical vortices with this class of optical elements.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201921502003