Dedicated to Prof. Wolfgang Eisenmenger on the occasion of his 65th birthday
- Autor(in)
- Referenz
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10 H. Edel, H. Bialas, O. Weis, Sound-Beam Topography of Crystal Defects, Z. Phys. B64 (1986) 437 - 445
11 Th. Aeugle, O. Weis, Imaging of Crystal Defects by Sound-Beam Topography using Wavelength in the Submicrometer Range, in: Acoustical Imaging, Vol. 19 (H. Ermert, H.-P. Harjes eds.) Plenum Press, New York 1992, p. 667 - 671
12 Th. Aeugle, O. Weis, Piezoelectric Surface Excitation and Detection of GHz-Sound Waves using Planar Structures: Hertzian- and H-Slot Resonators, Z. Phys. B71 (1988) 149 - 159
13 W. Menzel, Integrated Fin-Line Components for Communication, Radar and Radiometer Applications, in: Infrared and Millimeter Waves, Vol. 13 (Button, J. Kenneth eds.) Academic Press, Londong 1985, p. 77 - 121
14 F. Rösch, O. Weis, Geometric Propagation of Acoustic Phonons in Monocrystals within Anisotropic Continuum Acoustics. Part I. Sapphire and Quartz, Z. Phys. B25 (1976) 101 - 114
15 O. Weis, Direct Contact Superpolishing of Sapphire, Applied Optic. 31 (1992) 4355 - 4362
16 F. Schmid, D. Viechnicki, Growth of Sapphire Disks from the Melt by a Gradient Furnace Technique, J. Am. Ceram. Soc. 53, (1970) 528 - 529
17 B. Lehr, H. Ulrich, O. Weis, Determination of Attenuation and Phase Velocity of Hypersound by Multiple-Beam Interferometry in Evaporated Wedge-Shaped Metal Films, Z. Phys. B44 (1981) 167 - 175
18 H. Stenzel, O. Brosze, Leitfaden zur Berechnung von Schallvorgängen, Springer, Berlin, 1958
19 R. Truell, Ch. Elbaum, B. B. Chick, Ultrasonic Methods in Solid State Physics, Academic Press, New York 1969
1 H. Bömmel, K. Dransfeld, Excitation of Very-High-Frequency Sound in Quartz, Phys. Rev. Letter. 1 (1958) 234 - 236
20 H. Kogelnik, T. Li, Laser Beams and Resonators, Proc. IEE. 54 (1966) 1312
2 E. H. Jacobsen, Sources of Sound in Piezoelectric Crystals, J. Acoust. Soc. Am. 32 (1960) 949 - 953
3 J. B. Thaxter, P. E. Tannenwald, Temperature Dependence of Attenuation of 70-Gc/s Acoustic Waves in Quartz, Appl. Phys. Lett. 5 (1964) 67 - 68
4 J. B. Thaxter, P. E. Tannenwald, Phonon Generation, Propagation, and Attenuation at 70 GHz, IEEE Trans. on Sonics and Ultrasonic. SU-11 (1966) 61 - 69
5 J. Ilukor, E. H. Jacobsen, Generation and Detection of Coherent Elastic Waves at 114000 Mc/sec, Scienc. 153 (1966) 1113 - 1114
6 J. Ilukor, E. H. Jacobsen, Coherent Elastic Wave Propagation in Quartz at Ultramicrowave Frequencies, in Physical Acoustics, W. P. Mason (ed.), Vol. 5, Academic Press, New York, 1968, p. 221
7 B. Hadimioglu, L. J. LaComb Jr., D. R. Wright, B. T. Khuri-Yakub, C. F. Quate, High Efficiency, Multiple Layer ZnO Acoustic Transducers at Millimeter-Wave Frequencies, Appl. Phys. Lett. 50 (1987) 1642 - 1844
8 H. Ulrich, O. Weis, Excitation and Detection of Narrow, Movable Hypersound Beams in the GHz-Range, Z. Phys. B29 (1978) 185 - 187
9 O. Weis, Experiments with Movable Hypersound Beams, in: Phonon Scattering in Condensed Matter V (A. C. Anderson, J. P. Wolfe eds.) Springer Series in Solid State Sciences 68, Springer, Heidelberg 1986, p. 381 - 388
- Seitenbereich
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0272 - 0288
- Schlagwort(e)
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<KWD>Submicrometer sound
Crystal acoustics
Sound-beam topography
- Zusammenfsg.
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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 μm 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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