Abstract
Multimode fibers recently emerged as compact minimally-invasive probes for high-resolution deep-tissue imaging. However, the commonly used silica fibers have a relatively low numerical aperture (NA) limiting the spatial resolution of a probe. On top of that, light propagation within the solid core generates auto-fluorescence and Raman background, which interferes with imaging. Here we propose to use a hollow-core fiber to solve these problems. We experimentally demonstrate spatial wavefront shaping at the multimode hollow-core fiber output with tunable high-NA. We demonstrate raster-scan and speckle-based compressive imaging through a multimode hollow-core fiber.
| Original language | English |
|---|---|
| Pages (from-to) | 37098-37107 |
| Number of pages | 10 |
| Journal | Optics Express |
| Volume | 32 |
| Issue number | 21 |
| Early online date | 30 Sept 2024 |
| DOIs | |
| Publication status | Published - 7 Oct 2024 |
Bibliographical note
Publisher Copyright:Journal © 2024.
Funding
Nederlandse Organisatie voor Wetenschappelijk Onderzoek. This work was conducted at the Advanced Research Center for Nanolithography, a public-private partnership between the University of Amsterdam, Vrije Universiteit Amsterdam, University of Groningen, the Netherlands Organization for Scientific Research (NWO), and the semiconductor equipment manufacturer ASML, and was (partly) financed by \u2018Toeslag voor Topconsortia voor Kennis en Innovatie (TKI)\u2019 from the Dutch Ministry of Economic Affairs and Climate Policy. We thank Marco Seynen for his help in programming the data acquisition software.
| Funders | Funder number |
|---|---|
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek | |
| Ministerie van Economische Zaken en Klimaat | |
| Toeslag voor Topconsortia voor Kennis en Innovatie |