Long-distance surface profiling requires a high level of vibration ***,we propose a heterodyne interferometry scheme that uses two acousto-optic modulators (AOMs) to achieve precise and high-speed heterodyne phase-shi...
Long-distance surface profiling requires a high level of vibration ***,we propose a heterodyne interferometry scheme that uses two acousto-optic modulators (AOMs) to achieve precise and high-speed heterodyne phase-shifting *** solution offers high spatial resolution and effective vibration *** measured the fundamental vibration conditions in the laboratory and simulated the effect of vibration on measurement repeatability across different difference *** have demonstrated that this method can produce a single 3200 Hz sampling of a1024 pixel×1024 pixel camera within a period of 1.25 *** repeatability of measurements at 22 m away is better than 0.8‰ wave root mean square (RMS).
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