电子散斑剪切相移干涉仪的设计与实验
Design and experiment of electronic speckle shearing phase-shifting pattern interferometer
摘要：
基于迈克耳孙干涉仪，提出了一种电子散斑剪切相移干涉仪。其中一个反射臂上的步进电机驱动可旋转反射镜产生可调剪切，另一个反射臂上的压电陶瓷驱动反射镜实现相移。在实验中，测量了铝板在不同位置上受到相同外力以及在相同位置上受到不同外力时的变形。同时，利用四步相移法得到了铝板中心位置受外力作用时的相位分布和相位解缠图像。
英文摘要：
An electronic speckle shearing phase-shifting pattern interferometer (ESSPPI) based on Michelson interferometer was based in this paper. A rotatable mirror driven by a step motor in one of its reflective arm is used to generate an adjustable shearing and the mirror driven by piezoelectric transducer (PZT) in the other reflective arm was used to realize phaseshifting. In the experiments, the deformation of an aluminum plate with the same extern-force on different positions and different forces on the same position is measured. Meanwhile, the phase distribution and phase-unwrap image of the aluminum plate with the extern-force on its center position is obtained by the four-step phase-shifting method.
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