Diffractive metasurface light-shaping from fiber endoscope probes for increased depth of field

Fei He, Rafael Fuentes-Dominguez, Richard Cousins, Christopher J. Mellor, Jennifer K. Barton, George S.D. Gordon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In applications such as optical coherence tomography, there is a need both to achieve large depth of field by light shaping and to maintain ultracompact form factors. Flat metasurfaces on optical fibers can achieve such requirements, with designs such as encapsulated diffractive axicon masks. They have the advantages of simple fabrication and transfer, scalability to multi-layer structures and ability to wavelength and/or polarization control. We show a method to shape light from optical fibers via diffractive metallic metalenses bonded onto fiber facets. We discuss a novel process for fabrication and, as proof-of-principle, demonstrate Fresnel zone plates and diffractive axicons on optical fiber facets.

Original languageEnglish (US)
Title of host publicationEndoscopic Microscopy XVIII
EditorsGuillermo J. Tearney, Thomas D. Wang, Melissa J. Suter
PublisherSPIE
ISBN (Electronic)9781510658172
DOIs
StatePublished - 2023
EventEndoscopic Microscopy XVIII 2023 - San Francisco, United States
Duration: Jan 28 2023Jan 29 2023

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume12356
ISSN (Print)1605-7422

Conference

ConferenceEndoscopic Microscopy XVIII 2023
Country/TerritoryUnited States
CitySan Francisco
Period1/28/231/29/23

Keywords

  • axicon masks
  • fiber optics
  • Fresnel zone plates
  • metasurfaces
  • nanofabrications

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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