Open AccessExperimental photoluminescence and lifetimes at wavelengths including beyond 7 microns in Sm3+-doped selenide-chalcogenide glass fibers
Author(s) -
Richard Crane,
Ł. Sójka,
David Furniss,
Joel Nunes,
Emma R. Barney,
M.C. Farries,
T.M. Benson,
S. Sujecki,
Angela B. Seddon
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.383033
Subject(s) - photoluminescence , chalcogenide , materials science , chalcogenide glass , doping , absorption (acoustics) , impurity , optics , absorption spectroscopy , fiber , optical fiber , analytical chemistry (journal) , optoelectronics , wavelength , chemistry , physics , organic chemistry , chromatography , composite material
1000 ppmw Sm 3+ -doped Ge 19.4 Sb 9.7 Se 67.9 Ga 3 atomic % chalcogenide bulk glass and unstructured fiber are prepared. Near- and mid-infrared absorption spectra of the bulk glass reveal Sm 3+ electronic absorption bands, and extrinsic vibrational absorption bands, due to host impurities. Fiber photoluminescence, centred at 3.75 µm and 7.25 µm, is measured when pumping at either 1300 or 1470 nm. Pumping at 1470 nm enables the photoluminescent lifetime at 7.3 µm to be measured for the first time which was ∼100 µs. This is the longest to date, experimentally observed lifetime in the 6.5-9 µm wavelength-range of a lanthanide-doped chalcogenide glass fiber.