Imaging of Crystal Defects by Sound-Beam Topography Using Wavelengths in the Submicrometer Range

Aeugle, T.; Weis, O.

doi:10.1007/978-1-4615-3370-2_105

Acoustical Imaging

1992

DOI: 10.1007/978-1-4615-3370-2_105

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Imaging of Crystal Defects by Sound-Beam Topography Using Wavelengths in the Submicrometer Range

T. Aeugle

O. Weis

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1995

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Cited by 2 publications

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Experiments with narrow movable beams of pulsed sound waves at 35 GHz

Knöll

Weis

1995

Annalen der Physik

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Abstract. Only the study of absorption and angular dependent scattering of GHz and THz sound can give us detailed information about interaction processes of acoustical phonons. Therefore, the necessary techniques of sound generation, detection and undisturbed transmission to the target must be improved or to a large extent must still be developed. Corresponding attempts at 35 GHz are described. Sound-beam topography allowed to study crystal defects and also showed us where transmission without scattering occurred. For the piezoelectric generation a reflex klystron was used feeding a planar Hertzian resonator. The needle-like sound beams appeared as a double beam, each showing a minimum diameter of 35 pm for longitudinal polarized sound at an acoustic wavelength of 165 nm in X-cut quartz and 320 nm in a-cut sapphire. To obtain the smallest possible beam diameter for high resolution work, model calculations are presented for an excited fundamental Gaussian sound beam in an isotropic medium.

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Experiments with narrow movable beams of pulsed sound waves at 35 GHz

Knöll

Weis

1995

Annalen der Physik

Self Cite

View full text Add to dashboard Cite

show abstract

Piezoelectric sound generation and detection at 70 GHz using the technique of linear frequency modulation of a continuous wave

Scheffold

Weis

1995

Z. Physik B - Condensed Matter

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Imaging of Crystal Defects by Sound-Beam Topography Using Wavelengths in the Submicrometer Range

Cited by 2 publications

References 2 publications

Experiments with narrow movable beams of pulsed sound waves at 35 GHz

Experiments with narrow movable beams of pulsed sound waves at 35 GHz

Piezoelectric sound generation and detection at 70 GHz using the technique of linear frequency modulation of a continuous wave

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