6533b82dfe1ef96bd1291444

RESEARCH PRODUCT

Spectral properties and lifetime of green emission in γ-ray irradiated bismuth-doped silica photonic crystal fibers

Mohamed BouazaouiH. El HamzaouiAdriana MoranaSylvain GirardAntonino AlessiDiego Di FrancescaYoucef OuerdaneMarco CannasSimonpietro AgnelloGéraud BouwmansAziz Boukenter

subject

Materials Chemistry2506 Metals and AlloysOptical fiberOptical fiberMaterials sciencePhotoluminescenceAstrophysics::High Energy Astrophysical PhenomenaRadiation effectPhysics::Opticschemistry.chemical_elementCeramics and CompositeCondensed Matter PhysicAstrophysics::Cosmology and Extragalactic Astrophysics02 engineering and technology01 natural sciencesMolecular physicsSpectral lineBi-doped silicalaw.inventionBismuth010309 opticslaw0103 physical sciencesMaterials ChemistryIrradiationPhotoluminescenceComputingMilieux_MISCELLANEOUSAstrophysics::Galaxy Astrophysics[PHYS.PHYS]Physics [physics]/Physics [physics]Electronic Optical and Magnetic MaterialDoping021001 nanoscience & nanotechnologyCondensed Matter PhysicsCladding (fiber optics)Electronic Optical and Magnetic MaterialschemistryCeramics and Composites0210 nano-technologyPhotonic-crystal fiber

description

Abstract We report an experimental investigation focused on the green emission detected in γ-ray irradiated Bismuth-doped photonic crystal fibers. Our photoluminescence spectra, recorded at room temperature, provide evidence for the presence of two emission bands both located at ~ 530 nm (2.34 eV). One emission is detected only in the Bi-doped core while the other, is detected in the cladding. These two emissions feature different excitation spectra and a fast and a slow decay lifetime. The origin of the fast emission decay, about ten nanoseconds, is tentatively attributed to a silica intrinsic defect, whereas the slow component, having lifetime of about 2 μs and featuring anti-stokes emission, is certainly caused by Bi related defects.

yearjournalcountryeditionlanguage
2018-02-15Journal of Non-Crystalline Solids
https://doi.org/10.1016/j.jnoncrysol.2017.12.024