Measurements of air-borne ultrasound by detecting the modulation in optical refractive index of air
Measurements of air-borne ultrasound by detecting the modulation in optical refractive index of air
复制标题
通过检测空气光学折射率的调制来测量空气超声
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
S. Ueha
中科院分区：
文献类型：
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作者：
Kentaro Nakamura;M. Hirayama;S. Ueha
利用激光多普勒测速仪(LDV)利用空气的声光效应测量声压。首先对空气声光系数进行了研究，给出了声压与激光输出之间的定量关系。然后，对驻波和辐射场进行了二维测量。
Sound pressure was measured by a laser Doppler velocimeter (LDV) through the acousto-optic effect of air. First, the author studied the acousto-optic coefficient of air and gave the quantitative relationship between the sound pressure and the LDV output. Then, two-dimensional measurements were demonstrated for a standing wave and a radiated field.