Articles with "shaped apertures" as a keyword



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Improvements with divided cosine-shaped apertures in confocal microscopy

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Published in 2019 at "Optics Communications"

DOI: 10.1016/j.optcom.2019.03.008

Abstract: Abstract Confocal microscopy is now widely used in biological science for its high resolution and optical sectioning capability. Here we introduce the divided cosine-shaped apertures to further improve its spatial resolution and signal-to-background ratio (SBR).… read more here.

Keywords: divided cosine; microscopy; shaped apertures; confocal microscopy ... See more keywords
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Graphene-based metalens with rotatable radiation pattern composed of cross-shaped apertures

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Published in 2020 at "Optical Engineering"

DOI: 10.1117/1.oe.59.7.077101

Abstract: Abstract. A method for designing a metalens with electrically tunable focal length is proposed and analyzed. Metasurfaces are defined as low-thickness devices to initiate and generate the abrupt electromagnetic wavefront variation. However, there is no… read more here.

Keywords: focal length; shaped apertures; based metalens; graphene based ... See more keywords