Use of laser‐generated acoustic pulses to measure the electric field inside a solid dielectric

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Use of laser‐generated acoustic pulses to measure the electric field inside a solid dielectric

机译：使用激光产生的声脉冲来测量固体电介质内部的电场

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We describe a technique for measuring the electric field inside solid dielectrics and apply it to a polymethylmethacrylate sample. The technique uses a laser‐generated acoustic pulse to deform the sample inhomogeneously in a nondestructive, nonperturbing manner. From the electrical response of the sample during deformation, the macroscopic electric field as a function of position may be calculated. We achieved a sensitivity of 5×104 V/m and a spatial resolution of 50 μm in a 3‐mm‐thick sample.

机译：我们描述了一种测量固体电介质内部电场的技术，并将其应用于聚甲基丙烯酸甲酯样品。该技术使用激光产生的声脉冲以无损，无干扰的方式使样品不均匀变形。根据变形过程中样品的电响应，可以计算出宏观电场随位置的变化。我们在3毫米厚的样品中实现了5×104 V / m的灵敏度和50μm的空间分辨率。

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《Review of Scientific Instruments》 |1982年第5期|P.662-666|共5页
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Use of laser‐generated acoustic pulses to measure the electric field inside a solid dielectric

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