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Optical Fiber Probe with Integrated Micro-Optical Filter for Raman and Surface-Enhanced Raman Scattering Sensing.
Al Mamun, Md Abdullah; Katkus, Tomas; Mahadevan-Jansen, Anita; Juodkazis, Saulius; Stoddart, Paul R.
Afiliación
  • Al Mamun MA; School of Science, Computing and Engineering Technologies, Swinburne University of Technology, John Street, Hawthorn, VIC 3122, Australia.
  • Katkus T; Optical Sciences Center, Swinburne University of Technology, John Street, Hawthorn, VIC 3122, Australia.
  • Mahadevan-Jansen A; Biophotonics Center, Vanderbilt University, Nashville, TN 37235-1631, USA.
  • Juodkazis S; Optical Sciences Center, Swinburne University of Technology, John Street, Hawthorn, VIC 3122, Australia.
  • Stoddart PR; School of Science, Computing and Engineering Technologies, Swinburne University of Technology, John Street, Hawthorn, VIC 3122, Australia.
Nanomaterials (Basel) ; 14(16)2024 Aug 14.
Article en En | MEDLINE | ID: mdl-39195383
ABSTRACT
Optical fiber Raman and surface-enhanced Raman scattering (SERS) probes hold great promise for in vivo biosensing and in situ monitoring of hostile environments. However, the silica Raman scattering background generated within the optical fiber increases in proportion to the length of the fiber, and it can swamp the signal from the target analyte. While filtering can be applied at the distal end of the fiber, the use of bulk optical elements has limited probe miniaturization to a diameter of 600 µm, which in turn limits the potential applications. To overcome this limitation, femtosecond laser micromachining was used to fabricate a prototype micro-optical filter, which was directly integrated on the tip of a 125 µm diameter double-clad fiber (DCF) probe. The outer surface of the microfilter was further modified with a nanostructured, SERS-active, plasmonic film that was used to demonstrate proof-of-concept performance with thiophenol as a test analyte. With further optimization of the associated spectroscopic system, this ultra-compact microprobe shows great promise for Raman and SERS optical fiber sensing.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Suiza