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Ohishi, Y.
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Topics
Publications (10/10 displayed)
- 2019Ultrahigh-pressure form of Si O2 glass with dense pyrite-type crystalline homologycitations
- 2016Filamentation-induced spectral broadening and pulse shortening of infrared pulses in Tellurite glasscitations
- 2014Waveguides in Ni-doped glass and glass-ceramic written with a 1 kHz femtosecond lasercitations
- 2013On the analogy between photoluminescence and carrier-type reversal in Bi- and Pb-doped glassescitations
- 2012Investigation of Erbium-doped tellurite glasses for a planar waveguide power amplifier at 1.57 microns
- 2012Direct laser writing of relief diffraction gratings into a bulk chalcogenide glasscitations
- 2012Er-doped Tellurite glasses for planar waveguide power amplifier with extended gain bandwidthcitations
- 2010The efficiencies of energy transfer from Cr to Nd ions in silicate glassescitations
- 2009Ultrabroad emission from a bismuth doped chalcogenide glasscitations
- 2005Raman spectroscopic studies of quaternary tellurite glasses containing Nb2O5 and Ta2O5
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article
Ultrabroad emission from a bismuth doped chalcogenide glass
Abstract
We report emission from a bismuth doped chalcogenide glasswhich is flattened, has a full width at half maximum (FWHM) of 600 nm,peaks at 1300 nm and covers the entire telecommunications window. Atcryogenic temperatures the FWHM reaches 850 nm. The quantumefficiency and lifetime were as high as 32% and 175 μs, respectively. Wealso report two new bismuth emission bands at 2000 and 2600 nm.Absorption bands at 680, 850, 1020 and 1180 nm were observed. The 1180nm absorption band was previously unobserved. We suggest that the originof the emission in Bi:GLS is Bi 22− dimers.