Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 491, Issue 1-2, Pages 349-353Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.10.179
Keywords
Glasses; Optical absorption; J-O parameters; Luminescence; McCumber theory; Decay properties
Categories
Funding
- Defence Research and Development Organization, New Delhi [ERIP/ER/0603593/M/01/984]
- Korea Research Foundation
- Korean Government [KRF-2007-412-J00902]
Ask authors/readers for more resources
Er3+-doped alkaline earth titanium phosphate (RTP) glasses with molar composition of 24 (NaPO3)(6) + 30 KH2PO4+25 TiO2+20 RCl2+1 Er2O3 were prepared by melt quenching technique. Judd-Ofelt intensity parameters (Omega(2,4,6)) were determined from the experimental oscillator strengths (f(exp)) of absorption bands. From these parameters spontaneous emission probabilities (A(R)), luminescence branching ratios (beta(R)) and radiative lifetimes (tau(R)) have been calculated. Visible and near infrared photoluminescence spectra has been recorded by exciting the samples at 380 and 970 nm respectively. An intense broad emission band at 1.53 mu m was observed corresponding to 4I(13/2) -> 4I(15/2) transition. McCumber theory has been applied to determine the emission cross-sections (sigma(e)) of the 4I(13/2) -> 4I(15/2) transition using the absorption cross-sections (sigma(a)). The lifetimes of 4S(3/2) level were measured for the glasses by exciting the samples at 540 nm wavelength and the quantum efficiencies were also determined. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available