A novel 488 μm (or 0.6 terahertz) sensor based on a Michelson interferometer has been modeled and built. Despite various optically opaque barriers, audio speaker velocities of 3 to 6 mm/s have been measured at 40 Hz with a noise floor of 20 μm/s (or 25 μm / s Hz~(1/2) in velocity or 0.1 μm in displacement. Comparison with a commercial HeNe based vibrometer shows good agreement.
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机译：基于Michelson干涉仪的新型488μm（或0.6太极声）传感器已经建模和构建。尽管具有各种光学不透明的障碍，但是在40 Hz上测量了3至6mm / s的音频扬声器速度，噪音地板为20μm/ s（或25μm/ s hz〜（1/2），速度为0.1μm位移。与商业肝液的振动计的比较显示了良好的一致性。
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