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Optical sectioning fluorescence microscopy using variable metalens

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

Fluorescence microscopy is a common method to observe the structural features of biological samples. Conventional tunable lenses are usually used to axially scan the volumetric samples for obtaining fluorescence optical sectioning images. However, they suffer from spherical aberration and distortions. In this work, we propose a compact imaging system with optical sectioning capability based on Moiré metalens which consists of two complementary phase metasurfaces to perform fluorescence bio-imaging applications in visible regions. The focal length of system can be tuned from 10 mm to 125 mm at the wavelength of 532 nm by changing mutual angles between two metasurfaces. In addition, the speckle illumination HiLo microscope is used to reduce the effect of out-of-focus light scattering. To demonstrate the optical sectioning capability of our system, the labeled beads as well as ex vivo mice intestine tissue samples are imaged. The presented design of varifocal metalens is anticipated to realize important applications in fluorescence microscopy and endoscopy. © 2023 SPIE.
Original languageEnglish
Title of host publicationBiomedical Imaging and Sensing Conference
EditorsToyohiko Yatagai
PublisherSPIE
ISBN (Electronic)9781510663442
ISBN (Print)9781510663435
DOIs
Publication statusPublished - 2023
EventOptics and Photonics International Congress 2023 (OPIC 2023) - Pacifico Yokohama (hybrid), Yokohama, Japan
Duration: 17 Apr 2023 → 21 Apr 2023
https://opicon.jp/opic2023/about/aboutopic/

Publication series

NameProceedings of SPIE
Volume12608
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptics and Photonics International Congress 2023 (OPIC 2023)
PlaceJapan
CityYokohama
Period17/04/23 → 21/04/23
Internet address

Bibliographical note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Research Keywords

  • fluorescence microscopy
  • metasurface
  • optical sectioning

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