Quantitative measurement of acoustic pressure in the focal zone of acoustic lens-line focusing using the Schlieren method

Jiang Xueping; Cheng Qian; Xu Zheng; Qian Menglu; Han Qingbang

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Quantitative measurement of acoustic pressure in the focal zone of acoustic lens-line focusing using the Schlieren method

机译：使用Schlieren方法对声学透镜线焦点声压的定量测量

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This paper proposes a theory and method for quantitative measurement of the acoustic lens-line focusing ultrasonic (ALLFU) field in its focal spot size and acoustic pressure using the Schlieren imaging technique. Using Fourier transformation, the relationship between the brightness of the Schlieren image and the acoustic pressure was introduced. The ALLFU field was simulated using finite element method and compared with the Schlieren acoustic field image. The measurement of the focal spot size was performed using the Schlieren method. The acoustic pressure in the focal zone of the ALLFU field and the transducer-transmitting voltage response were quantitatively determined by measuring the diffraction light fringe intensity. The results show that the brightness of the Schlieren image is a linear function of the acoustic intensity when the acousto-optic interaction length remains constant and the acoustic field is weak. (C) 2016 Optical Society of America

机译：本文提出了一种用Schlieren成像技术在其焦点尺寸和声压中的声学透镜线聚焦超声波（ALLFU）场的定量测量的理论和方法。利用傅立叶变换，引入了薛定仁图像亮度与声压的关系。使用有限元方法模拟AllFU字段，并与Schlieren声场图像进行比较。使用Schlieren方法进行焦点尺寸的测量。通过测量衍射光条强度，定量地确定ALLFU场的焦区和换能器透射电压响应的声压。结果表明，当声光相互作用长度保持恒定时，Schlieren图像的亮度是声学强度的线性函数，并且声场弱。（c）2016年美国光学学会

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来源
《Applied optics》 |2016年第10期|共6页
作者
Jiang Xueping; Cheng Qian; Xu Zheng; Qian Menglu; Han Qingbang;
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作者单位

Hohai Univ Coll IOT Engn Changzhou 213022 Peoples R China;

Tongji Univ Sch Phys Sci &

Engn Shanghai 200092 Peoples R China;

Tongji Univ Sch Phys Sci &

Engn Shanghai 200092 Peoples R China;

Tongji Univ Sch Phys Sci &

Engn Shanghai 200092 Peoples R China;

Hohai Univ Coll IOT Engn Changzhou 213022 Peoples R China;

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正文语种 eng
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Quantitative measurement of acoustic pressure in the focal zone of acoustic lens-line focusing using the Schlieren method

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