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Acoustic coupling from a focused transducer to a flat plate and back to the transducer
X Chen1, K Q Schwarz, K J Parker
1Rochester Center for Biomedical Ultrasound, University of Rochester, New York 14627.
The Journal of the Acoustical Society of America
|June 1, 1994
Abstract:
An approximate solution for the acoustic coupling factor (the diffraction correction function) from a focused transducer to a flat plate and back to the transducer is provided. This function is useful for system calibrations where a pulse-echo system or transmit-receive system is used. Numerical solutions are provided for the important case where the flat plate is placed near the focal plane of the transducer. The solution for a flat disk transducer is obtained as a limiting case. Experimental evidence for a focused transducer is provided.