...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Chemistry and Physics >Thermal, vibrational and optical properties of Eu~(3+)-doped lead fluorophosphate glasses for red laser applications
【24h】

Thermal, vibrational and optical properties of Eu~(3+)-doped lead fluorophosphate glasses for red laser applications

机译：掺Eu〜（3+）的氟磷酸盐磷酸铅玻璃的热，振动和光学性质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Eu~(3+)-doped lead fluorophosphate glasses of composition 44 P_2O_5 - 17 K_2O - 9 Al_2O_3 - (24 - x) PbF_2 - 6 Na_2O - x Eu_2O_3, where x = 0.1, 0.5,1.0 and 2.0 mol%, have been prepared by conventional melt quenching technique and are characterized through thermal, vibrational, absorption and emission spectra and decay rate measurements. Judd-Ofelt (JO) intensity parameters (Ω_λ. λ = 2, 4 and 6) have been evaluated from the absorption spectrum as well as emission spectrum of 1.0 mol% Eu_2O_3 doped glass. The JO parameters derived from the absorption spectrum have been used to calculate important radiative properties such as transition probability (A), lifetime (τ_r), branching ratio (β_r) and peak stimulated emission cross-section (σ_e(λ_p)) for the ~5D_0→~ 7F_J (J = 0,1, 2, 3 and 4) transitions of the Eu~(3+) ions. The decay rates of the ~5D_0 fluorescent level of Eu~(3+) ions in the title glasses are found to be single exponential for all the studied Eu~(3+) ion concentrations. A marginal increase in lifetime of the ~5D_0 level has been noticed with increase in Eu~(3+) ion concentration from 0.1 mol% to 2.0 mol%. From the absorption spectra, the optical band gap energy (E_(opt)) and Urbach energy (ΔE) have been evaluated from their ultraviolet absorption edges. All the obtained results in the present study were reported and discussed in detail.
机译：组成44 P_2O_5-17 K_2O-9 Al_2O_3-（24-x）PbF_2-6 Na_2O-x Eu_2O_3的Eu〜（3+）掺杂的氟磷酸铅玻璃具有x = 0.1、0.5、1.0和2.0 mol％通过常规的熔体淬火技术制备的聚苯乙烯，通过热，振动，吸收和发射光谱以及衰减速率测量来表征。已从1.0摩尔％Eu_2O_3掺杂玻璃的吸收光谱和发射光谱评估了Judd-Ofelt（JO）强度参数（Ω_λ。λ= 2、4和6）。从吸收光谱得出的JO参数已用于计算〜的重要辐射特性，例如跃迁概率（A），寿命（τ_r），分支比（β_r）和峰值受激发射截面（σ_e（λ_p））。 Eu〜（3+）离子的5D_0→〜7F_J（J = 0,1、2、3和4）跃迁。发现在所有研究的Eu〜（3+）离子浓度下，标题玻璃中的Eu〜（3+）离子〜5D_0荧光水平的衰减率均为单指数。随着Eu〜（3+）离子浓度从0.1 mol％增加到2.0 mol％，已经注意到〜5D_0水平的寿命略有增加。根据吸收光谱，已经从它们的紫外线吸收边缘评估了光学带隙能量（E_（opt））和Urbach能量（ΔE）。报告并详细讨论了本研究中所有获得的结果。

著录项

  • 来源
    《Materials Chemistry and Physics》 |2013年第3期|903-911|共9页
  • 作者

    C.R. Kesavulu; K. Kiran Kumar; N. Vijaya; Ki-Soo Lim; C.K. Jayasankar;

  • 作者单位

    Department of Physics, Chungbuk National University, Cheongju 361-763, Republic of Korea;

    Department of Physics, Sri Venkateswara University, Tirupati 517 502, India;

    Department of Physics, Sri Venkateswara University, Tirupati 517 502, India;

    Department of Physics, Chungbuk National University, Cheongju 361-763, Republic of Korea;

    Department of Physics, Sri Venkateswara University, Tirupati 517 502, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Classes; Differential thermal analysis; Phonons; Optical properties;

    机译：类;差热分析;声子光学性质;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号