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Compression of Acoustic Beams at Conversion Reflection in Hexagonal Crystals

机译:六边形晶体转换反射处的声学束压缩

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摘要

It is shown how the entire energy of an acoustic beam incident on a boundary of a hexagonal crystal can be directed into a narrow reflected beam propagating at a small angle to the surface. This process is accompanied by mode conversion: the incident and reflected beams belong to different acoustic branches. The conversion near the total internal reflection is implemented by matching the orientations of the sagittal plane and surface and thereby eliminating the loss for parasitic wave reflection. The found conversion conditions and resonant reflection parameters are expressed in terms of the moduli of elasticity of crystal.
机译:示出了入射在六边形晶体的边界上的声光的整个能量可以被引导到与表面小角度传播的窄反射光束中。 该过程伴随着模式转换:事件和反射光束属于不同的声学分支。 通过匹配矢状平面和表面的方向来实现近的内反射附近的转换,从而消除寄生波反射的损失。 发现的转换条件和谐振反射参数以晶体的弹性模量表示。

著录项

  • 来源
    《Crystallography reports》 |2018年第4期|共6页
  • 作者单位

    Shubnikov Institute of Crystallography Federal Scientific and Research Center “Crystallography and Photonics ” Russian Academy of Sciences;

    Shubnikov Institute of Crystallography Federal Scientific and Research Center “Crystallography and Photonics ” Russian Academy of Sciences;

    Shubnikov Institute of Crystallography Federal Scientific and Research Center “Crystallography and Photonics ” Russian Academy of Sciences;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
  • 关键词

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