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.

Alessi, A., Di Francesca, D., Girard, S., Morana, A., Bouazaoui, M., El Hamzaoui, H., et al. (2017). Spectral properties and lifetime of green emission in γ-ray irradiated bismuth-doped silica photonic crystal fibers. JOURNAL OF NON-CRYSTALLINE SOLIDS, 482, 100-104 [10.1016/j.jnoncrysol.2017.12.024].

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

Alessi, A.;Di Francesca, D.;Morana, A.;Agnello, S.;Cannas, M.;
2017

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.
http://www.journals.elsevier.com/journal-of-non-crystalline-solids/
Alessi, A., Di Francesca, D., Girard, S., Morana, A., Bouazaoui, M., El Hamzaoui, H., et al. (2017). Spectral properties and lifetime of green emission in γ-ray irradiated bismuth-doped silica photonic crystal fibers. JOURNAL OF NON-CRYSTALLINE SOLIDS, 482, 100-104 [10.1016/j.jnoncrysol.2017.12.024].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/288230
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