Praseodymium mid-infrared emission in AlF3-based glass sensitized by ytterbium.
Opt Express
; 29(21): 34166-34174, 2021 Oct 11.
Article
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| MEDLINE
| ID: mdl-34809213
ABSTRACT
Broadband emission was obtained over 2.6 to 4.1 µm (Pr3+ 1G4â3F4, 3F3) in AlF3-based glass samples doped with different concentrations of praseodymium and 1 mol% ytterbium using a 976 nm laser pump. An efficient energy transfer process from Yb3+ 2F5/2 to Pr3+ 1G4 was analyzed through emission spectra and fluorescence lifetime values. The absorption and emission cross-sections were calculated by Füchtbauer-Ladenburg and McCumber theories and a positive gain can be obtained when P>0.3. To the best of the authors' knowledge, this work represents the first report of broadband mid-infrared emission of Pr3+ in an AlF3-based glass. The results show that praseodymium doped AlF3-based glass sensitized by ytterbium could be a promising candidate for fiber lasers operating in mid-infrared region.
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Colección:
01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2021
Tipo del documento:
Article