Laser diode self-mixing: Range-finding and sub-micron vibration measurement

A plain laser diode can easily measure sub-micron vibrations from centimeters away by self-mixing interferometry! I also show how this technique can be used for range-finding.

http://sci-hub.tw/http://iopscience.i...

https://www.jameco.com/Jameco/Product...

https://www.spiedigitallibrary.org/jo...

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