PATTERNS OF SOUND IN A CRYSTAL
October 25, 1965
This is a schematic diagram of the experimental setup used to photograph acoustic mode patterns in a crystal subjected to high-frequency sound waves.
This "visual acoustic" system was developed by Dr. G. E. Peterson and Mr. P. N. Bridenbaugh of Bell Telephone Laboratories and may be of practical importance in developing improved transducers, filters, and frequency control devices.
The crystal used in the experiments was potassium dihydrogen phosphate (KDP).
PHOTO 10-25-65 - B4075