Visible to near-infrared broadband fluorescence from Ce-doped silica fiber
| Autor: | Amit Yadav, Kimmo Lahtonen, Nikolai B. Chichkov, Regina Gumenyuk, Evgeny Zherebtsov, Mikhail Melkumov, Mikhail V. Yashkov, Mika Valden, Harri Ali-Löytty, Edik U. Rafailov |
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| Přispěvatelé: | Tampere University, Physics |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Silica fiber business.industry Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser 114 Physical sciences 01 natural sciences Fluorescence Electronic Optical and Magnetic Materials law.invention 010309 optics Wavelength X-ray photoelectron spectroscopy law 0103 physical sciences Optoelectronics Fiber 0210 nano-technology business Luminescence Visible spectrum |
| Zdroj: | Optical Materials Express |
| ISSN: | 2159-3930 |
| Popis: | 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. publishedVersion |
| Databáze: | OpenAIRE |
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