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5 November 1992 Improved performance of the optically scanned transducer
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The rapid increase in the use of ultrasound in both clinical and industrial applications requires more advanced and reliable imaging systems for calibrating and characterizing high performance ultrasonic transducers. The optically scanned hydrophone (OSH) is an alternative imaging system capable of quasi-real time imaging of broadband acoustic fields. The main application of the OSH is in the imaging and characterization of acoustic fields such as those emitted from clinical and therapeutic transducers. In this paper, the recent development of the OSH and its application to real time imaging of broadband acoustic fields are reported. Using improved fabrication techniques the optical sampling efficiency of the OSH has been considerably improved. This is achieved by adopting new assembly techniques and incorporating a novel differential electrode configuration. The improved optical sampling efficiency has provided a more competitive, versatile, and faster imaging system. The performance of the modified OSH is compared against the other types of hydrophone such as the spot poled and the needle types.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. W. Turner and M. S.S. Bolorforosh "Improved performance of the optically scanned transducer", Proc. SPIE 1733, New Developments in Ultrasonic Transducers and Transducer Systems, (5 November 1992);

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