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- W2000397393 abstract "Bragg diffraction is one of several principles presently being examined in research to produce optical images of objects irradiated by ultrasound. !n this method, laser light is diffracted from the scattered ultrasonic wavefronts as originally predicted by Brillouin in 1921. Historically, some of the first experimental attempts to use ultrasound for imaging were made by Sokolov in his Leningrad laboratory more than 40 years ago. One of the approaches he employed was remarkably similar to the approach presently being pursued and suggested in 1966 by Korpel of Zenith. In our laboratory, we have carried out experiments involving sound frequencies of 15, 18, and 25 MHz and more recently 3.6 MHz. The images obtained at the higher frequencies are at least comparable to those of competing ultrasonic methods. At the lower frequency, special care must be taken to avoid interference between the image beam and the undiffracted light. This paper will discuss the practical problems encountered and will present theorectical calculations to compare several competing approaches presently being pursued." @default.
- W2000397393 created "2016-06-24" @default.
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- W2000397393 date "1973-01-01" @default.
- W2000397393 modified "2023-09-23" @default.
- W2000397393 title "Real‐Time Ultrasonic Imaging by Bragg Diffraction" @default.
- W2000397393 doi "https://doi.org/10.1121/1.1982189" @default.
- W2000397393 hasPublicationYear "1973" @default.
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