K. Wei et al., SPECTROSCOPY OF DY3-GA-S GLASS AND ITS SUITABILITY FOR 1.3-MU-M FIBEROPTIC AMPLIFIER APPLICATIONS( IN GE), Optics letters, 19(12), 1994, pp. 904-906
Absorption and emission spectra, along with lifetime measurements, of
Dy3+ in Ge-Ga-S glasses are reported. Fluorescence is observed at 1.3,
1.8, and 2.9 mum. A Judd-Ofelt analysis is performed to determine bra
nching ratios and quantum efficiencies. The hypersensitive transition
F-6(11/2) --> H-6(15/2) at 1.3 mum has a quantum efficiency of 17%. It
s suitability for an optical amplifier at 1.3 mum depends on the excit
ed-state absorption from the H-6(11/2) and H-6(13/2) states, which has
not yet been measured.