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Help me find a thread.

Rafa

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Feb 4, 2010
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Hi all

I'm looking for a thread where it was explained how you can measure the wavelength of a laser by shining it between two razor blades and measuring the distancen between each point the interference generates.

Any idea where is it? I have already used the search.

Thankss
 

chipdouglas

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i believe it is only good for checking wavelength shifts. i don't think you can shine it through and say "hey, this is a 405" think about it you would need to be able to measure on scales of nanometers LoL

a good experiement you can do is put a 2 different colored lasers on perfectly on top of each other and put a double axis diffraction grating in front. then notice how the dots don't line up vertically but are shifted.
 

532 with Envy

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That is great! thanks for the link....i'll have to try this out. I am terrible at math but Xplorer877 makes it very clear.
 




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