Low cost and long-focal-depth metallic axicon for terahertz frequencies based on parallel-plate-waveguides
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-82503-x
Abstract: In this work we demonstrate a triangular surface lens (axicon) operating at frequencies between 350 and 450 GHz using parallel-plate-waveguide technology. The proposed axicon offers longer focal depth characteristics compared to conventional plastic lenses, surpassing common… read more here.
Keywords: low cost; parallel plate; focal depth; axicon ... See more keywords
Freeform axicon with azimuthal variation
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2020.1814435
Abstract: An analytical closed-form equation to design a freeform element that replicates an axicon is presented. In this paper, we get the mentioned analytical closed-form equation step by step. The equation comes from applying both the… read more here.
Keywords: axicon; azimuthal variation; freeform axicon; equation ... See more keywords
Efficient Fiber-to-Waveguide Edge Coupling Using an Optical Fiber Axicon Lens Fabricated by Focused Ion Beam
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DOI: 10.1109/jphot.2017.2710189
Abstract: Efficient edge coupling into a silicon waveguide is demonstrated using an optical fiber axicon lens operating at 1550 nm. The axicon was fabricated on the cleaved endfacet of an SMF-28e optical fiber using a focused ion… read more here.
Keywords: fiber; tex math; axicon; inline formula ... See more keywords
Generating superimposed Bessel beams with a volume holographic axicon.
Sign Up to like & getrecommendations! Published in 2017 at "Applied optics"
DOI: 10.1364/ao.56.004206
Abstract: Quasi-Bessel beams (QBB) with different profiles are generated with an axicon-telescope system. Beam profiles are found to vary with different axicon-telescope distance δ. QBBs are stored as volume holograms in a photorefractive crystal. Reconstructions of… read more here.
Keywords: bessel beams; generating superimposed; superimposed bessel; axicon ... See more keywords