Title
Fluorescence Quantum Efficiency Measurements In The Presence Of Auger Upconversion By The Thermal Lens Method
Abstract
Mode-mismatched thermal lens (TL) measurements in Cr3+-doped fluoride crystals (LiSrAlF6 and LiSrGaF6) are reported. A nonlinear increase of the TL signal, and decrease of quantum efficiency, with increasing excitation power was observed and attributed to energy-transfer upconversion (ETU). Assuming an upcon-version rate that is proportional to the excited-state population, Wup = γN6, the theoretical model developed fits the experimental data well. The ETU parameters (γ) were determined with unprecedented accuracy for low Cr concentrations. Thermo-optical parameters (K, ds/dT) were also obtained. © 2003 Optical Society of America.
Publication Date
2-15-2003
Publication Title
Optics Letters
Volume
28
Issue
4
Number of Pages
239-241
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1364/OL.28.000239
Copyright Status
Unknown
Socpus ID
0037443132 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/0037443132
STARS Citation
Pilla, Viviane; Catunda, Tomaz; and Jenssen, Hans P., "Fluorescence Quantum Efficiency Measurements In The Presence Of Auger Upconversion By The Thermal Lens Method" (2003). Scopus Export 2000s. 1847.
https://stars.library.ucf.edu/scopus2000/1847