Visible to near-infrared broadband fluorescence from Ce-doped silica fiber

Amit Yadav, Nikolai B. Chichkov, Regina Gumenyuk, Harri Ali-Löytty, Kimmo Lahtonen, Mika Valden, Mikhail A. Melkumov, Mikhail V. Yashkov, Evgeny Zherebtsov, Edik U. Rafailov

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Abstract

We investigate the fluorescence characteristics of a purely Ce-doped silica fiber and demonstrate broad-bandwidth fluorescence across the visible and near-infrared. The Ce-doped fiber is fabricated using standard modified chemical vapor deposition technology. Trace metal analysis by inductively coupled plasma mass spectrometry confirmed the purity of Ce-doping. The Ce valence state of 3+ was revealed by X-ray photoelectron spectroscopy. The optimum pump wavelength for the broadest luminescence from a fiber is scanned between 405 nm to 440 nm wavelength of diode lasers operating under continuous-wave regime. The strongest pump absorption is observed at the wavelength of 405 nm. Variation of pump power and fiber length results in the demonstration of broad-bandwidth fluorescence with spectral widths up to 301 nm (at -10 dB). The measured fluorescence spectra cover the wavelength range from ∼458 nm to ∼819 nm with spectral power densities of up to 2.4 nW/nm.

Original languageEnglish
Pages (from-to)2528-2538
Number of pages11
JournalOptical Materials Express
Volume11
Issue number8
DOIs
Publication statusPublished - 2021
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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