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22 July, 14:42

Explain working of Laser Doppler Vibrometer with diagram.

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  1. 22 July, 15:47
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    A laser-Doppler vibrometer identifies the Doppler effect or shift of laser light reflected from the sample object

    Explanation:

    A laser-Doppler vibrometer (e. g. Micro Motion Analyzer 400 from Polytec) identifies the Doppler effect or shift of laser light reflected from the sample object. At a beam splitter, a laser beam is partitioned into a measuring beam and a reference beam that deflects 90 ° upwards and transmit to the reference mirror "RM." Both beams come back to the beam splitter.
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