12 January 2018 Acoustic pressure measurement of pulsed ultrasound using acousto-optic diffraction
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Abstract
Compared with continuous ultrasound wave, pulsed ultrasound has been widely used in ultrasound imaging. The aim of this work is to show the applicability of acousto-optic diffraction on pulsed ultrasound transducer. In this paper, acoustic pressure of two ultrasound transducers is measured based on Raman-Nath diffraction. The frequencies of transducers are 5MHz and 10MHz. The pulse–echo method and simulation data are used to evaluate the results. The results show that the proposed method is capable to measure the absolute sound pressure. We get a sectional view of acoustic pressure using a displacement platform as an auxiliary. Compared with the traditional sound pressure measurement methods, the proposed method is non-invasive with high sensitivity and spatial resolution.
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Lecheng Jia, Shili Chen, Bin Xue, Hanzhong Wu, Kai Zhang, Xiaoxia Yang, Zhoumo Zeng, "Acoustic pressure measurement of pulsed ultrasound using acousto-optic diffraction", Proc. SPIE 10621, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 106210B (12 January 2018); doi: 10.1117/12.2287331; https://doi.org/10.1117/12.2287331
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