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In-situ background-free Raman probe using double-cladding anti-resonant hollow-core fibers.

ABSTRACT: This study presents the development of an in-situ background-free Raman fiber probe, employing two customized double-cladding anti-resonant hollow-core fibers (AR-HCFs). The Raman background noise measured in the AR-HCF probe is lower than that of a conventional multi-mode silica fiber by two orders of magnitude. A plug-in device for fiber coupling optics was designed that was compatible with a commercially available confocal Raman microscope, enabling in-situ Raman detection. The numerical aperture (NA) of both AR-HCF claddings exceeds 0.2 substantially enhancing the collection efficiency of Raman signals at the distal end of the fiber probe. The performance of our Raman fiber probe is demonstrated by characterizing samples of acrylonitrile-butadiene-styrene (ABS) plastics, alumina ceramics, and ethylene glycol solution.

SUBMITTER: Luan S

PROVIDER: S-EPMC10942705 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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In-situ background-free Raman probe using double-cladding anti-resonant hollow-core fibers.

Luan Shufan S Chen Si S Zhu Xinyue X Wu Dakun D Yu Fei F Hu Junjiang J Yu Chunlei C Hu Lili L

Biomedical optics express 20240216 3

This study presents the development of an in-situ background-free Raman fiber probe, employing two customized double-cladding anti-resonant hollow-core fibers (AR-HCFs). The Raman background noise measured in the AR-HCF probe is lower than that of a conventional multi-mode silica fiber by two orders of magnitude. A plug-in device for fiber coupling optics was designed that was compatible with a commercially available confocal Raman microscope, enabling in-situ Raman detection. The numerical aper ...[more]

PMID: 38495691

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