• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied optics >Influence of doping on thermal diffusivity of single crystals used in photonics: measurements based on thermal wave methods
【24h】

Influence of doping on thermal diffusivity of single crystals used in photonics: measurements based on thermal wave methods

机译：掺杂对光子学中使用的单晶热扩散率的影响：基于热波方法的测量

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

Three crystals used in solid-state lasers, namely, yttrium aluminum garnet (YAG), yttrium orthovana-date (YVO_(4)), and gadolinium calcium oxoborate (GdCOB), were investigated to determine the influence of dopants on their thermal diffusivity. The thermal diffusivity was measured by thermal wave method with a signal detection based on mirage effect. The YAG crystals were doped with Yb or V, the YVO_(4) with Nd or Ca and Tm, and the GdCOB crystals contained Nd or Yb. In all cases, the doping caused a decrease in thermal diffusivity. The analysis of complementary measurements of ultrasound velocity changes caused by dopants leads to the conclusion that impurities create phonon scattering centers. This additional scattering reduces the phonon mean free path and accordingly results in the decrease of the thermal diffusivity of the crystal. The influence of doping on lattice parameters was investigated, additionally.
机译：研究了固态激光器中使用的三种晶体，即钇铝石榴石（YAG），正钛酸钇（YVO_（4））和草酸g硼酸钙（GdCOB），以确定掺杂剂对其热扩散率的影响。通过热波法通过基于幻影效应的信号检测来测量热扩散率。 YAG晶体掺有Yb或V，YVO_（4）掺有Nd或Ca和Tm，而GdCOB晶体掺有Nd或Yb。在所有情况下，掺杂都会导致热扩散率降低。由掺杂剂引起的超声速度变化的互补测量的分析得出结论，即杂质会形成声子散射中心。这种额外的散射减少了声子的平均自由程，因此导致晶体的热扩散率降低。此外，研究了掺杂对晶格参数的影响。

著录项

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