# name
1.84 micron emission of Tm3+ sensitized by Yb3+ ions in monoclinic KGd(WO4)2 single crystals

# metadata.dc.description.abstract[].value
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.

# metadata.dc.rights[].value
(c) American Institute of Physics , 2007

# metadata.dc.source[].value
Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

# metadata.dc.title[].value
1.84 micron emission of Tm3+ sensitized by Yb3+ ions in monoclinic KGd(WO4)2 single crystals