In:
Advances in OptoElectronics, Hindawi Limited, Vol. 2007 ( 2007-04-30), p. 1-8
Abstract:
We demonstrate new series of heavy metal containing fluorophosphate glass system. The fluorescence and nonradiative properties of Nd 3 + ions are investigated as a function of Nd 2 O 3 concentration. The variation of intensity parameters Ω 2 , Ω 4 , and Ω 6 is determined from absorption spectra. The spontaneous probability ( A ) and branching ratio ( β ) are determined using intensity parameters. The emission cross sections for the 4 F 3 / 2 → 4 I 13 / 2 transition, which is calculated by Fuchtbabauer-Ladenburg method, decrease from 6.1 × 10 − 21 to 3.0 × 10 − 21 ( pm 2 ) and those for the 4 F 3 / 2 → 4 I 11 / 2 transition decrease from 3.51 × 10 − 20 to 1.7 × 10 − 20 as Nd 2 O 3 concentration increase up to 3 wt % . The nonradiative relaxation is analyzed in terms of multiphonon relaxation and concentration quenching due to energy transfer among Nd 3 + ions. Finally, the above results obtained at 1 wt % Nd 2 O 3 are compared with some of reported laser host glasses which indicated the potentials for broadband-amplifiers and high-power laser applications.
Type of Medium:
Online Resource
ISSN:
1687-563X
,
1687-5648
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2007
detail.hit.zdb_id:
2323547-0
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