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Proceedings Paper

On The Use Of Synthetic Holograms For High Resolution Scanning Acoustic Microscopy
Author(s): Henri Block; Georg Heygster; Ulrich Geise; Rene Krupka; Uwe Manasse; Siegfried Boseck
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Paper Abstract

Some properties of the OTF of a scanning acoustic microscope (SAM) have been measured With the help of a glass-water-edge, a grating and Siemens star spoke target of chromium on glass, a layered gold-glass-edge and a microelectronic circuit. After explaining the special conditions for image formation in the SAM, which is a confocal ultrasonic scanning device, concerning the defocussing and interaction effects with the specimen, we regard it as a linear system, and the influence of the testing object is included as a part of the imaging system. We deconvolve SAM micrographs with the help of synthetic holograms, produced by an analogue electron-lightoptical device, inserted in a 4f coherent optical image processor. We show that the edges of the objects become sharper and that the image structure is more clearly related to the light microscopical image impression.

Paper Details

Date Published: 31 March 1989
PDF: 10 pages
Proc. SPIE 1026, Holography Techniques and Applications, (31 March 1989); doi: 10.1117/12.950223
Show Author Affiliations
Henri Block, University of Bremen (F.R. Germany)
Georg Heygster, University of Bremen (F.R. Germany)
Ulrich Geise, University of Bremen (F.R. Germany)
Rene Krupka, University of Bremen (F.R. Germany)
Uwe Manasse, University of Bremen (F.R. Germany)
Siegfried Boseck, University of Bremen (F.R. Germany)

Published in SPIE Proceedings Vol. 1026:
Holography Techniques and Applications
Werner P. O. Jueptner, Editor(s)

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