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Observation of 4F3/2 to 4I15/2 radiative transition in Nd3+ ions in GaLaS glass using frequency-resolved PL spectroscopy

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The photoluminescence (PL) emission band corresponding to 4F3/2 to 4I15/2 transition has been revealed using a double lock-in technique and quadrature frequency resolved spectroscopy (QFRS) at room temperature in Nd3+ in a GaLaS glass. The band is centred around 1840 nm and has a lifetime ~77µs, which seems to be the same for all four radiative transitions 4F3/2 to 4IJ (J = 9/2, 11/2, 13/2 and 15/2). The branching ratios beta J of the four above transitions have been estimated from the PL data and agree well with the results of Judd-Ofelt (JO) analysis. In addition to the 1840 nm band, we have observed another PL band appearing around 1580 nm and having a dominant lifetime ~3.8 µs. This band may be identified with the radiative transition from the doublet (4F5/2, 2H9/2) to the 4I15/2 manifold. The short lifetime ~3.8 µs may be caused by effective multiphonon relaxation from the doublet to the 4F3/2 manifold.

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Aoki, Takeshi, Koughia, Kirill, Fujimoto, K., Fujihashi, C., DeCorby, R., Haugen, C., Hewak, D.W., Tonchev, D. and Kasap, Safa (2009) Observation of 4F3/2 to 4I15/2 radiative transition in Nd3+ ions in GaLaS glass using frequency-resolved PL spectroscopy Physica Status Solidi C: Current Topics in Solid State Physics, 6, (S1), S54-S58. (doi:10.1002/pssc.200881272).

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Published date: May 2009


Local EPrints ID: 163645
ISSN: 1610-1634
PURE UUID: 692ce3bf-0556-4485-85e2-167ba1dec91c
ORCID for D.W. Hewak: ORCID iD

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Date deposited: 10 Sep 2010 10:26
Last modified: 18 Jul 2017 12:30

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Author: Takeshi Aoki
Author: Kirill Koughia
Author: K. Fujimoto
Author: C. Fujihashi
Author: R. DeCorby
Author: C. Haugen
Author: D.W. Hewak ORCID iD
Author: D. Tonchev
Author: Safa Kasap

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