Thermally enhanced frequency upconversion in Nd3+-doped fluoroindate glass

Citation
Ld. Menezes et al., Thermally enhanced frequency upconversion in Nd3+-doped fluoroindate glass, J APPL PHYS, 90(9), 2001, pp. 4498-4501
Citations number
31
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
90
Issue
9
Year of publication
2001
Pages
4498 - 4501
Database
ISI
SICI code
0021-8979(20011101)90:9<4498:TEFUIN>2.0.ZU;2-W
Abstract
Multiphonon assisted frequency upconversion was observed in a Nd3+-doped fl uoroindate glass pumped at 866 nm. A near-infrared upconverted emission at 750 nm with a peculiar linear dependence with the laser intensity was obser ved and explained. The intensity of the upconverted emission experienced a 40-fold enhancement when the sample's temperature was varied from 298 to 49 8 K. A rate equation model that includes light pumping and multiphonon abso rption via thermally coupled electronic excited states of Nd3+ was used, de scribing quite well the experimental results. (C) 2001 American Institute o f Physics.