Generation and detection of 160 MHz acoustic waves using a TEA CO (2) laser irradiated polymer film combination.
High-frequency (~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(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.
Dyer
P E
PE
Dept. of Appl. Phys., Hull Univ.
Sidhu
J
J
Tait
B L
BL