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- Title
Observation of Visible Upconversion Luminescence of Soft Glass Multimode Fibers.
- Authors
Ferraro, Mario; Mangini, Fabio; Filosa, Raffaele; Couderc, Vincent; Sun, Yifan; Parra-Rivas, Pedro; Gemechu, Wasyhun A.; Stepniewski, Grzegorz; Filipkowski, Adam; Buczynski, Ryszard; Wabnitz, Stefan
- Abstract
This research investigates the visible upconversion luminescence which is induced by multiphoton absorption of soft glass fiber defects. The study of this phenomenon has thus far been restricted to standard silica fibers. We observed the emission of green and cyan light as a consequence of fiber material ionization. We investigate both the commercial ZBLAN step index and in-house-made tellurite nanostructured graded-index fibers. For the latter, the analysis of the luminescence signal permits us to determine the core and cladding refractive index difference. Upconversion luminescence is a powerful tool for characterizing soft glass fibers and a promising platform for innovative photonic technologies and mid-IR applications.
- Subjects
GLASS fibers; PHOTON upconversion; GREEN light; LUMINESCENCE; MULTIPHOTON absorption; SILICA fibers
- Publication
Fibers, 2024, Vol 12, Issue 2, p15
- ISSN
2079-6439
- Publication type
Article
- DOI
10.3390/fib12020015