Squeezing of a Focused Acoustic Beam and Acoustic Microscopy of Anisotropic Media

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概要

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• The concept of squeezing in qtuntum optics is applied to focused acoustic beam evaluation for the first time. Mathematical equivalence between coherent and squeezed states in quantum optics and angular spectra in various acoustical imaging schemes is derived and discussed. The squeezing operation, which deforms or controls pairs of physical quantities, is defined to evaluate focused acoustic beam quality from a unified point of view, especially in the measurement of anisotropic materials. Furthermore, the concept of the "vector figure of merit" is introduced, which describes both the resolution of focusing and the ability to measure the anisotropy of materials.

• 社団法人応用物理学会の論文
• 1995-05-30

著者

• Hoshimiya Tsutomu

  Department Of Applied Physics Faculty Of Engineering Tohoku Gakuin University

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