TY - JOUR
T1 - Optical analysis of samarium doped sodium bismuth silicate glass
AU - Thomas, V.
AU - Sofin, R. G.S.
AU - Allen, M.
AU - Thomas, H.
AU - Biju, P. R.
AU - Jose, G.
AU - Unnikrishnan, N. V.
N1 - Funding Information:
VT & HT are thankful to Department of Science and Technology for FIST Project No: SR/FST/College-202/2014 ( DST, Government of India ) and Kerala State Council for Science, Technology and Environment ( KSCSTE, Government of Kerala ) SARD Project No 21/SARD/2014/KSCSTE for financial assistance.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/1/15
Y1 - 2017/1/15
N2 - Samarium doped sodium bismuth silicate glass was synthesized using the melt quenching method. Detailed optical spectroscopic studies of the glassy material were carried out in the UV–Vis-NIR spectral range. Using the optical absorption spectra Judd-Ofelt (JO) parameters are derived. The calculated values of the JO parameters are utilized in evaluating the various radiative parameters such as electric dipole line strengths (Sed), radiative transition probabilities (Arad), radiative lifetimes (τrad), fluorescence branching ratios (β) and the integrated absorption cross- sections (σa) for stimulated emission from various excited states of Sm3 +‡ ion. The principal fluorescence transitions are identified by recording the fluorescence spectrum. Our analysis revealed that the novel glassy system has the optimum values for the key parameters viz. spectroscopic quality factor, optical gain, stimulated emission cross section and quantum efficiency, which are required for a high performance optical amplifier. Calculated chromaticity co-ordinates (0.61, 0.38) also confirm its application potential in display devices.
AB - Samarium doped sodium bismuth silicate glass was synthesized using the melt quenching method. Detailed optical spectroscopic studies of the glassy material were carried out in the UV–Vis-NIR spectral range. Using the optical absorption spectra Judd-Ofelt (JO) parameters are derived. The calculated values of the JO parameters are utilized in evaluating the various radiative parameters such as electric dipole line strengths (Sed), radiative transition probabilities (Arad), radiative lifetimes (τrad), fluorescence branching ratios (β) and the integrated absorption cross- sections (σa) for stimulated emission from various excited states of Sm3 +‡ ion. The principal fluorescence transitions are identified by recording the fluorescence spectrum. Our analysis revealed that the novel glassy system has the optimum values for the key parameters viz. spectroscopic quality factor, optical gain, stimulated emission cross section and quantum efficiency, which are required for a high performance optical amplifier. Calculated chromaticity co-ordinates (0.61, 0.38) also confirm its application potential in display devices.
KW - A. Glasses
KW - D. Optical properties
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U2 - 10.1016/j.saa.2016.07.055
DO - 10.1016/j.saa.2016.07.055
M3 - Article
C2 - 27504818
AN - SCOPUS:84982757596
SN - 1386-1425
VL - 171
SP - 144
EP - 148
JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
ER -