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Yadav, Amit
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Publications (4/4 displayed)
- 2021Visible to near-infrared broadband fluorescence from Ce-doped silica fibercitations
- 2019405-nm pumped Ce3+-doped silica fiber for broadband fluorescence from cyan to red
- 2019Optical properties of Ce-doped silica fibercitations
- 2014Novel evaluation procedure for internal and extraction efficiency of high-power blue LEDscitations
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article
Visible to near-infrared broadband fluorescence from Ce-doped silica fiber
Abstract
e 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.