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Generation and detection of 160 MHz acoustic waves using a TEA CO/sub 2/ laser irradiated polymer film combination

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3 Author(s)
P. E. Dyer ; Dept. of Appl. Phys., Hull Univ., UK ; J. Sidhu ; B. L. Tait

High-frequency ( approximately 160 MHz) large-amplitude acoustic waves have been generated by irradiating a thin polymer film with a spontaneously mode-locked TEA (transversely-excited atmosphere) CO/sub 2/ laser and detected using a wide-bandwidth piezoelectric polymer transducer. This approach uses a simple and commonly available infrared laser, does not require special coatings to be deposited on the acoustic generating surface, and is inherently simple in its design and operation.<>

Published in:

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control  (Volume:35 ,  Issue: 1 )