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掺Er^3＋：Ge25Ga5S70玻璃的Judd-Ofelt参数与光谱性质 被引量：1

Judd-Ofelt Parameters and Spectroscopic Properties of Er^3＋ -doped Ge25Ga5S70 Glass
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摘要 采用熔融冷却法制备了Er^3＋掺杂的Ge25Ga5S70硫系玻璃，研究其红外透过率、热稳定性。应用Judd—Ofelt理论计算了Er^3＋离子的强度参数Ωt（t=2，4，6）、自发辐射跃迁几率、荧光分支比和辐射寿命等光谱参数。应用McCumber理论，计算了Er^3＋：^4I13／2→^4I15／2跃迁的受激发射截面。结果表明，该玻璃具有较宽的荧光半高宽（FWHM=71nm）、较大的受激发射截面（Fe=1．325×10^-20cm^2）和较好的稳定性，是一种理想的宽带光纤放大器基质材料。 A Er^3＋-doped Ge25Ga5S70 glass was fabricated by the melt quench method, studying the glass by the infrared transmission and the thermal stability. The Judd-Ofelt intensity parameters Ωt （t = 2,4,6）, spontaneous transition probability, fluorescence branching ratio and radiative lifetime of energy levels for Er^3＋ were calculated by Judd-Ofelt theory. The stimulated emission cross-section of Er^3＋ ：^4I13/2→^4I15/2 transition was calculated by McCumber theory. The results show that this chalcogenide glass has broad fluorescence full width at half maximum （FWHM = 71 nm）, large stimulated emission cross-section （ σe^peak = 13.25 × 10^-21 cm^2） and good thermal stability. This glass can be used as a candidate host material for potential broadband optical amplifiers.
作者 吴怡 徐铁峰 聂秋华 戴世勋 沈祥 王训四
机构地区 宁波大学信息科学与工程学院
出处 《武汉理工大学学报》 CAS CSCD 北大核心 2007年第E01期254-259,共6页 Journal of Wuhan University of Technology
基金 国家973前期预研项目（2006CB708607）,浙江省科技计划项目（2006C11127）和宁波市自然科学基金项目（2006A610056）.
关键词 硫系玻璃 光谱性质 ET^3+离子 chalcogenide glass spectroscopic properties erbium ions
分类号 O482.31 [理学—固体物理]
  • 相关文献

参考文献19

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二级参考文献43

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共引文献22

同被引文献22

  • 1戴世勋 彭波 王训四等.3-5μm中红外发光的硫系玻璃材料研究进展.光子学报,2008,37(1):239-244.
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  • 10张鹏君 戴世勋 徐铁峰等.Tm^3+掺杂Ge20Ga5Sb10S65玻璃光谱性质研究.光子学报,2008,37:104-107.

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武汉理工大学学报
2007年 第E01期

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