Techniques and Information Content of Sonoholograms

Paper presented at a Symposium on Techniques in Applied Photography organized by the Science Committee on 2-3 December 1965, in London.

Abstract

Some attemps have been mode to apply ultrasonography to metrology, from which sonophotometry has evolved. The information content of this method is, however, not sufficient since the sonosensitive films record only amplituide of the U.S. waves and do not give any information about phase variation. It is shown that using the holography method, discovered in 1947 by D. Gdbor, and using sonosensitive plates, holograms can be obtained by U.S. waves. Drawing a parallel between these holograms–termed sonoholograms–and those of Leith and Upatnieks taken with laser, it is not possible to establish any principal differences.

Notes

Paper presented at a Symposium on Techniques in Applied Photography organized by the Science Committee on 2-3 December 1965, in London.