Sunday, December 9, 2018

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.iop.org/article/10.1088/1464-4258/4/6/371/pdf

https://www.jameco.com/Jameco/Products/ProdDS/2120428.pdf

https://www.spiedigitallibrary.org/journals/optical-engineering/volume-57/issue-05/051506/Overview-of-self-mixing-interferometer-applications-to-mechanical-engineering/10.1117/1.OE.57.5.051506.full?SSO=1

Nerd Thunder!  Check them out!
Dean Segovis: https://www.youtube.com/user/HackaweekTV
Jeri Ellsworth: https://www.youtube.com/user/jeriellsworth
Becky Stern: https://www.youtube.com/user/bekathwia
Ben Krasnow: https://www.youtube.com/user/bkraz333
John Schuch: https://www.youtube.com/user/HackersBenchTV
Darren Landrum: https://www.youtube.com/user/dmlandrum
Joe Grand: https://www.youtube.com/user/kingpinempire
Mark VandeWettering: https://www.youtube.com/user/brainwagon


https://www.patreon.com/AppliedScience
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1 comment:

  1. DanyMarch 7, 2019 at 3:55 PM

    Hi Ben,

    Very nice videos. You can do a full video on making a tunable external cavity diode laser. It would be quite useful.

    ReplyDelete

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