Help me find a thread.

[Rafa]

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

 

[532 with Envy]

I'm sorry I couldn't find any reference to two razor blades....
I was just searching spectrometers of late and found this...perhaps some help if not exact.
http://laserpointerforums.com/f42/homemade-laser-spectrometer-26466.html

 

[chipdouglas]

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.

 

[Rafa]

Why the hell did I post this here?
.... I think I'm getting stupid with time.

Thanks to both of you but that's not what I was looking for.

Hell I found it: http://laserpointerforums.com/f44/s...y-my-attempt-calculate-wavelengths-50334.html

I just remember who created the thread. Xplorer877.

Hope it help you guys too!

 

[532 with Envy]

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.