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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
On the analogy between photoluminescence and carrier-type reversal in Bi- and Pb-doped glasses
Abstract
Reaction order in Bi-doped oxide glasses depends on the opticalbasicity of the glass host. Red and NIR photoluminescence (PL) bandsresult from Bi2+ and Bin clusters, respectively. Very similar centers arepresent in Bi- and Pb-doped oxide and chalcogenide glasses. Bi-implantedand Bi melt-doped chalcogenide glasses display new PL bands, indicatingthat new Bi centers are formed. Bi-related PL bands have been observed inglasses with very similar compositions to those in which carrier-typereversal has been observed, indicating that these phenomena are related tothe same Bi centers, which we suggest are interstitial Bi2+ and Bi clusters.