ultrasonic transducers

phased array

radiation force

focused ultrasound

photoacoustic imaging

pa imaging

high intensity focused

acoustic

diagnostic ultrasound

IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control

We report the development of an optically transparent high-frequency ultrasonic transducer using lithium niobate single-crystal and indium–tin–oxide electrodes with up to 90% optical transmission in the visible-to-near-infrared spectrum. The center frequency of the transducer was at 36.9 MHz with 33.9%, at −6 dB fractional bandwidth. The photoacoustic imaging capability of the fabricated transducer was also demonstrated by successfully imaging a resolution target and mouse-ear vasculatures  in vivo , which were irradiated by a 532 nm pulse laser transmitted through the transducer.

Transparent High-Frequency Ultrasonic Transducer for Photoacoustic Microscopy Application