RT Journal Article
T1 Homogeneous broadening effect on temperature dependence of green upconversion luminescence in erbium doped fibers
A1 Egatz-Gómez, Ana
A1 Gómez Calderón, Óscar
A1 Melle Hernández, Sonia
A1 Carreño Sánchez, Fernando
A1 Antón Revilla, Miguel Ángel
A1 Gort, Elske M.
AB We study the green upconversion luminescence of Er3+ ions in an aluminosilicate optical fiber upon near infrared excitation at 787 nm. The dependence of the upconversion luminescence on temperature has been determined. As temperature drops from room to cryogenic temperatures, the upconversion green emission reaches a maximum around 40 K, and then decreases. A nearly quadratic dependence of the upconversion luminescence with excitation power is found, which is consistent with a sequential stepwise two-photon absorption process. These results have been explained with a semiclassical model that considers the inhomogeneous broadening of the optical transitions due to glass imperfections, and the dependence of the homogeneous linewidth broadening on temperature.
PB Elsevier Science BV
SN 0022-2313
YR 2013
FD 2013-06
LK https://hdl.handle.net/20.500.14352/35631
UL https://hdl.handle.net/20.500.14352/35631
LA eng
NO Received 31 July 2012, Revised 27 December 2012, Accepted 14 February 2013, Available online 24 February 2013
NO Ministerio de Ciencia e Innovación de España (MICINN)
NO Universidad Complutense de Madrid (España)
NO Banco Santander (España)
DS Docta Complutense
RD 22 abr 2025