Spectroscopic characterization of alkali modified zinc-tellurite glasses doped with neodymium
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作者:
Rajeswari, R.
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Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, IndiaSri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India
Rajeswari, R.
[1
]
Babu, S. Surendra
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Instruments Res & Dev Estab, Laser Instrumentat Design Ctr, Dehra Dun 248008, Uttar Pradesh, IndiaSri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India
Babu, S. Surendra
[2
]
Jayasankar, C. K.
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Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, IndiaSri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India
Jayasankar, C. K.
[1
]
机构:
[1] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India
[2] Instruments Res & Dev Estab, Laser Instrumentat Design Ctr, Dehra Dun 248008, Uttar Pradesh, India
Neodymium doped zinc-tellurite glasses of composition TeO2-ZnO-Na2O-Li2O have been prepared and characterized for their thermal, structural and optical properties. Differential thermal analysis revealed reasonably good forming tendency of the glass composition. FTIR spectra were used to analyze the functional groups present in the glass. Judd-Ofelt intensity parameters were derived from the absorption spectrum and used to calculate the radiative lifetime, branching ratio and stimulated emission cross-section for F-4(3/2) -> I-4(9/2,) (11/2,) (13/2) transitions. The quantum efficiency of the F-4(3/2) level is comparable to the typical values obtained for the Nd2O3-doped glasses. The decay properties for higher concentration of Nd2O3 were analyzed using Inokuti-Hirayama model to investigate the non-radiative relaxation of the F-4(3/2) emitting level. The experimental values of branching ratio and saturation intensity of F-4(3/2) -> I-4(11/2) transition and calculated spectroscopic quality factor indicate the favourable lasing action in these glasses. (c) 2010 Elsevier B.V. All rights reserved.
机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Chen, YJ
Huang, YD
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Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R ChinaChinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Huang, YD
Huang, ML
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Huang, ML
Chen, R
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Chen, R
Luo, ZD
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Luo, ZD
Huang, ML
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Chen, YJ
Huang, YD
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Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R ChinaChinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Huang, YD
Huang, ML
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Huang, ML
Chen, R
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Chen, R
Luo, ZD
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
Luo, ZD
Huang, ML
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机构:Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China