Open AccessPr 3+ ‐ and Pr 3+ /Er 3+ ‐Doped Selenide Glasses for Potential 1.6 μm Optical Amplifier Materials
Author(s) -
Choi Yong Gyu,
Park Bong Je,
Kim Kyong Hon,
Heo Jong
Publication year - 2001
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.01.0101.0301
Subject(s) - materials science , selenide , optical amplifier , stimulated emission , optoelectronics , laser diode , laser , optics , absorption (acoustics) , optical pumping , diode , wavelength , erbium , doping , amplifier , fiber laser , analytical chemistry (journal) , physics , chemistry , selenium , cmos , chromatography , metallurgy , composite material
1.6 µm emission originated from Pr 3+ : ( 3 F 3 , 3 F 4 ) → 3 H 4 transition in Pr 3+ ‐ and Pr 3+ /Er 3+ ‐doped selenide glasses was investigated under an optical pump of a conventional 1480 nm laser diode. The measured peak wavelength and full‐width at half‐maximum of the fluorescent emission are ~1650 nm and ~120 nm, respectively. A moderate lifetime of the thermally coupled upper manifolds of ~212 ± 10 µs together with a high stimulated emission cross‐section of ~(3 ± 1)×10 −−20 cm 2 promises to be useful for 1.6 µm band fiber‐optic amplifiers that can be pumped with an existing high‐power 1480 nm laser diode. Codoping Er 3+ enhances the emission intensity by way of a nonradiative Er 3 +: 4 I 13/2 → Pr 3+ : ( 3 F 3 , 3 F 4 ) energy transfer. The Dexter model based on the spectral overlap between donor emission and acceptor absorption describes well the energy transfer from Er 3+ to Pr 3+ in these glasses. Also discussed in this paper are major transmission loss mechanisms of a selenide glass optical fiber.