On The Use Of Synthetic Holograms For High Resolution Scanning Acoustic Microscopy

Henri Block; Georg Heygster; Ulrich Geise; Rene Krupka; Uwe Manasse; Siegfried Boseck

doi:10.1117/12.950223

31 March 1989 On The Use Of Synthetic Holograms For High Resolution Scanning Acoustic Microscopy

Henri Block, Georg Heygster, Ulrich Geise, Rene Krupka, Uwe Manasse, Siegfried Boseck

Proceedings Volume 1026, Holography Techniques and Applications; (1989) https://doi.org/10.1117/12.950223
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

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.

Citation Download Citation

Henri Block, Georg Heygster, Ulrich Geise, Rene Krupka, Uwe Manasse, and Siegfried Boseck "On The Use Of Synthetic Holograms For High Resolution Scanning Acoustic Microscopy", Proc. SPIE 1026, Holography Techniques and Applications, (31 March 1989); https://doi.org/10.1117/12.950223

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