Transparent High-Frequency Ultrasonic Transducer for Photoacoustic Microscopy Application
Ruimin Chen, Yun He, Junhui Shi, C. S. Yung, Jeeseong Hwang, Lihong V. Wang, Qifa Zhou
2020IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control60 citationsDOIOpen Access PDF
Abstract
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.
Topics & Concepts
TransducerMaterials scienceLithium niobateUltrasonic sensorCenter frequencyOpticsPhotoacoustic effectOptoelectronicsLaserBandwidth (computing)Indium tin oxideAcousticsBand-pass filterTelecommunicationsNanotechnologyComputer scienceLayer (electronics)PhysicsPhotoacoustic and Ultrasonic ImagingThermography and Photoacoustic TechniquesUltrasound Imaging and Elastography