Variable ratio blue/red upconversion in Yb3+-Tm3+ codoped fluorosilicate glasses.
Opt Lett
; 48(14): 3721-3724, 2023 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-37450734
ABSTRACT
Simultaneous blue-red emission in a fiber pumped by a single wavelength source is perceived as a great challenge because of the large energy difference of the emitted photons. This Letter reports the dependence of the blue-to-red upconversion (UC) emission ratio in Yb3+-Tm3+ codoped fluorosilicate glasses (FSGs) under the excitation of a 980-nm laser on the host glass silica content. Photoluminescence spectra and SEM-EDS are used to clarify the UC mechanism, indicating that the probability of the cross-relaxation (CR) process 1G4 + 3F2â3H6 + 3F4 is key to the dominance of the blue or red emissions. This research can provide a new platform for variable UC luminescence.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Luminescência
/
Luz
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2023
Tipo de documento:
Article