Title :
Photoinduced effects and light emission in Ga-La-S:Pr3+ glass
Author :
Seddon, A.B. ; Furniss, D. ; Jovu, M.S. ; Shutov, S.D. ; Syrbu, N.N. ; Andriesh, A.M. ; Hertogen, P. ; Adriaenssens, G.J.
Author_Institution :
Novel Photonic Glasses Group, Nottingham Univ., UK
fDate :
28 Sept.-2 Oct. 2003
Abstract :
The absorption and radiation spectra of Ga-La-S-O glasses with fixed cation ratio Ga/La=0.7/0.3 and two oxygen content 0.65 Wt % and 2.95 Wt % were studied for two Pr3+ doping levels of 0.1 and 1.0 Wt %. Presence of oxygen induces blue shift of the fundamental absorption edge and results in lowering of the low-energy components of the Pr3+ absorption bands. The glasses show bright luminescence due to Pr3+ ion emission similar to that in other glasses. The effect of oxygen on the luminescence spectra is determined by decreasing of host glass self-absorption of the short-wavelength bands, which became visible with oxide content growing.
Keywords :
gallium compounds; glass; impurity absorption spectra; lanthanum compounds; photoluminescence; praseodymium; spectral line shift; visible spectra; Ga-La-S-O glasses; Ga-La-S-O:Pr3+; Ga-La-S:Pr3+ glass; Pr3+ doping levels; absorption bands; absorption spectra; blue shift; bright luminescence; fundamental absorption edge; host glass self-absorption; light emission; low-energy components; photoinduced effects; radiation spectra; short-wavelength bands; Doping; Electromagnetic wave absorption; Geometrical optics; Glass; Ion emission; Luminescence; Optical devices; Optical pumping; Particle beam optics; Stimulated emission;
Conference_Titel :
Semiconductor Conference, 2003. CAS 2003. International
Print_ISBN :
0-7803-7821-0
DOI :
10.1109/SMICND.2003.1251363
