振动物体的边带数字全息成像
Imaging of a vibrating object by Sideband Digital Holography
摘要：
我们利用边带数字全息术对振动物体的振幅进行了定量测量。由物体散射的光上的频率边带，偏移n倍的振动频率，选择性地检测外差全息术，并计算不同阶数n的物体的图像。已经观察到高达n=120的阶数，允许测量明显大于光波长的振荡幅度。利用每个n值的强度零点的位置，我们重建了物体振动的形状。
英文摘要：
We obtain quantitative measurements of the oscillation amplitude of vibrating objects by using sideband digital holography. The frequency sidebands on the light scattered by the object, shifted by n times the vibration frequency, are selectively detected by heterodyne holography, and images of the object are calculated for different orders n. Orders up to n=120 have been observed, allowing the measurement of amplitudes of oscillation that are significantly larger than the optical wavelength. Using the positions of the zeros of intensity for each value of n, we reconstruct the shape of vibration the object.
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