Title :
Erbium Doped Tellurite Glasses for Potential Infrared Sensor Applification
Author :
Shen, Xiang ; Nie, Qiuhua ; Xu, Tiefeng ; Dai, Shixun ; Wang, Xunsi
Author_Institution :
Fac. of Inf. Sci. & Eng., Ningbo Univ., Zhejiang
Abstract :
The B2O3 was introduced into Er3+ doped TeO2-ZnO-Na2O glass to increase the phonon energy of the host. The effect of B2O3 on the lifetime of 4I11/2 level was investigated. The results show that the lifetime of 4I11/2 level is shortened ascribing to the increasing multiphonon decay rate between the 4I11/2 and 4I13/2 level. Accordingly, the green- and red-upconversion fluorescence decreases with increasing of B2O3 concentration. A five-level rate-equation model of the Er3+ population dynamics in tellurite glass is developed. The model suggests the green- and red-upconversion intensity is a quadratic dependence on the population density of the 4I11/2 level. The intense visible upconversion fluorescence observed in Er3+ doped TeO2 -ZnO-Na2O glass indicates it can be used in infrared sensor application
Keywords :
borate glasses; erbium compounds; fluorescence; infrared detectors; phonon-phonon interactions; sodium compounds; tellurium compounds; zinc compounds; TeO2-ZnO-Na2O-B2O3-Er 2O3; erbium doped tellurite glasses; green-upconversion fluorescence; infrared sensor application; multiphonon decay rate; rate-equation model; red-upconversion fluorescence; Absorption; Annealing; Erbium; Fluorescence; Glass; Information science; Infrared sensors; Luminescence; Phonons; Power engineering and energy; Er3+ doped; boro-tellurite glass; rate-equation; upconversion;
Conference_Titel :
Robotics, Automation and Mechatronics, 2006 IEEE Conference on
Conference_Location :
Bangkok
Print_ISBN :
1-4244-0024-4
Electronic_ISBN :
1-4244-0025-2
DOI :
10.1109/RAMECH.2006.252751
