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Title: 1.84 micron emission of Tm3+ sensitized by Yb3+ ions in monoclinic KGd(WO4)2 single crystals
Author: Güell Vilà, Frank
Massons, Jaume
Gavaldà, Josefina
Pujol Baigés, Maria Cinta
Aguiló Díaz, Magdalena
Díaz, Francesc (Díaz González)
Keywords: Metalls de terres rares
Làsers d'estat sòlid
Electrònica quàntica
Rare earth metals
Solid-state lasers
Quantum electronics
Issue Date: 2007
Publisher: American Institute of Physics
Abstract: By exciting at 940 nm, we have characterized the 1.84 m near infrared emission of trivalent thulium ions in Yb3+, Tm3+:KGd WO4 2 single crystals as a function of the dopant concentration and temperature, from 10 K to room temperature. An overall 3H6 Stark splitting of 470 cm−1 for the Tm3+ ions in the Yb3+, Tm3+:KGd WO4 2 was obtained. We also studied the blue emission at 476 nm Tm3+ and the near infrared emissions at 1.48 m Tm3+ and 1 m Yb3+ as a function of the dopant concentration. Experimental decay times of the 1G4, 3H4, and 3F4 Tm3+ and 2F5/2 Yb3+ excited states have been measured as a function of Yb3+ and Tm3+ ion concentrations. For the 3F4 →3H6 transition of Tm3+ ions, we used the reciprocity method to calculate the maximum emission cross section of 3.07 10−20 cm2 at 1.84 m for the polarization parallel to the Nm principal optical direction.
Note: Reproducció del document publicat a:
It is part of: Journal of Applied Physics, 2007, vol. 101, p. 033108-1-033108-6
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ISSN: 0021-8979
Appears in Collections:Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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