Judd–Ofelt analysis of spectroscopic properties of Nd³⁺-doped novel fluorophosphate glass

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• 作者：J.H. Choi ; Alfred Margaryan ; Ashot Margaryan and F.G. Shi
• 关键词：MgF₂– ; BaF₂– ; Al(PO₃)₃– ; Ba(PO₃)₂ glass system ; Judd– ; Ofelt theory ; Emission cross-section ; Multiphonon relaxation
• 刊名：Journal of Luminescence
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：114
• 期：3-4
• 页码：167-177
• 全文大小：320 K

文摘

Judd–Ofelt analysis is performed for the new MgF₂–BaF₂–Al(PO₃)₃–Ba(PO₃)₂-based glass system to evaluate the spontaneous emission probability as well as quality factor and branching ratio. The variation of intensity parameters e=""mml18"">e=""text-decoration:none; color:black"" href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4G94J2J-1&_mathId=mml18&_user=10&_cdi=5311&_rdoc=3&_handle=V-WA-A-W-WC-MsSAYZA-UUW-U-AABZWDCDWV-AABBYCZCWV-CADVBUUZU-WC-U&_acct=C000050221&_version=1&_userid=10&md5=afdb723ec569c93564da0333a2cf1eb9"" title=""Click to view the MathML source"">Ω₂, e=""mml19"">e=""text-decoration:none; color:black"" href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4G94J2J-1&_mathId=mml19&_user=10&_cdi=5311&_rdoc=3&_handle=V-WA-A-W-WC-MsSAYZA-UUW-U-AABZWDCDWV-AABBYCZCWV-CADVBUUZU-WC-U&_acct=C000050221&_version=1&_userid=10&md5=84fd5429864fdaa8ae8608b04156a3a6"" title=""Click to view the MathML source"">Ω₄, and e=""mml20"">e=""text-decoration:none; color:black"" href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4G94J2J-1&_mathId=mml20&_user=10&_cdi=5311&_rdoc=3&_handle=V-WA-A-W-WC-MsSAYZA-UUW-U-AABZWDCDWV-AABBYCZCWV-CADVBUUZU-WC-U&_acct=C000050221&_version=1&_userid=10&md5=ed7bf716343afb0d480b1d24e31d17a0"" title=""Click to view the MathML source"">Ω₆ are analyzed as a function of Nd₂O₃ concentration. It is found that the efficiency for the ⁴F_3/2→⁴I_9/2 transition enhances and the efficiency for the ⁴F_3/2→⁴I_11/2 transition diminishes as the difference between e=""mml21"">e=""text-decoration:none; color:black"" href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4G94J2J-1&_mathId=mml21&_user=10&_cdi=5311&_rdoc=3&_handle=V-WA-A-W-WC-MsSAYZA-UUW-U-AABZWDCDWV-AABBYCZCWV-CADVBUUZU-WC-U&_acct=C000050221&_version=1&_userid=10&md5=fb5ecdcb1ffac2dff6cf2f5871ef09a7"" title=""Click to view the MathML source"">Ω₄ and e=""mml22"">e=""text-decoration:none; color:black"" href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4G94J2J-1&_mathId=mml22&_user=10&_cdi=5311&_rdoc=3&_handle=V-WA-A-W-WC-MsSAYZA-UUW-U-AABZWDCDWV-AABBYCZCWV-CADVBUUZU-WC-U&_acct=C000050221&_version=1&_userid=10&md5=9be73091d85323f0ecd1c391479decab"" title=""Click to view the MathML source"">Ω₆ increases with an increase in Nd₂O₃ concentration. The emission cross section for the ⁴F_3/2→⁴I_13/2 transition varies from 1.1×10⁻²⁰ to 1.15×10⁻²⁰ cm², and for the ⁴F_3/2→⁴I_11/2 transition it varies from 2.97×10⁻²⁰ to 2.69×10⁻²⁰ cm² with an increase in Nd₂O₃ concentration from 1 to 5 wt % . Analysis on non-radiative decay is performed based on multiphonon relaxation mechanisms. The above results are also compared with those of other host glass materials with the similar Nd³⁺ dopant concentration, which suggests that present new glass is promising for fiber laser applications.