Spectroscopic characteristics of Sm3+-doped alkali fluorophosphate glasses

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
M JayasimhadriR V S S N Ravikumar

Abstract

Optical absorption, luminescence and lifetime measurements of Sm(3+)-doped alkali fluorophosphate glasses with molar compositions of 50(NaPO(3))(6)+10TeO(2)+20AlF(3)+19RF+1Sm(2)O(3) (R=Li, Na and K) are described. The variation of optical properties with glass composition plays a dominant role in the determination of efficient laser materials. From the experimental oscillator strengths of f-f electric dipole transitions, the phenomenological Judd-Ofelt parameters have been evaluated and are used to evaluate radiative parameters such as radiative transition probabilities (A(R)), branching ratios (beta(R)), lifetimes (tau(R)) and integrated absorption cross-section (sigma(a)) for various excited levels. The predicted values of tau(R) and beta(R) from the (4)G(5/2) excited level to its lower levels are compared with the experimentally measured values. Stimulated emission cross-sections (sigma(e)) were also determined for (4)G(5/2)-->(6)H(J) (J=5/2, 7/2, 9/2 and 11/2) emission transitions. From the emission transitions of Sm(3+) in these alkali tellurofluorophosphate glasses certain potential laser transitions have been identified.

References

Aug 1, 1992·Physical Review. B, Condensed Matter·S TanabeT Hanada
Mar 14, 2003·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Akshaya KumarS B Rai
Jan 30, 2004·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Priyanka SrivastavaD K Rai
Aug 6, 2004·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·L R MoorthyD V R Murthy

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Citations

Feb 18, 2014·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·K SwapnaG Vijaya Prakash
Dec 18, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·S BabuY C Ratnakaram
Sep 22, 2012·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Ying TianShiqing Xu
Jun 10, 2015·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Viji VidyadharanP R Biju

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