Hello,
I’m new to this community, but wanted to post a question about using the Qbox Michelson interferometer to measure the wavelength of the laser light. This is usually done by observing the movement of the interference fringes on the screen as we move one of the mirrors. However, in order to compute the wavelength from the change of interferometry pattern we need to know the distance we have shifted the mirror.
Do anyone have an idea how/if this can be achieved within the Qbox setup? The setup includes adjustable mirrors but I don’t know how to read of a shift in terms of actual distance.
Thanks for any tips!
Hey @ktywoniuk! Thanks for your first post! This sounds like a great contribution to new experiments you can do with the QBox (and openUC2 in general)! 
I’m sure you’re aware of the Michelson interferometer - Wikipedia ’s ability to measure the spectrum. With the current setup it’s quite difficult to actually rotate the micrometer screws precisely + simultaneously so that you will arrive at a perfectly parallel movement of the one mirror along the optical axis.
If I’m not mistaking the micromeneter screw has a pitch of #4-40, hence 40 threads per inch, so 0,635mm per revolution. Does this help already?
Maybe @wanghaoran1207 knows more about this detail
1 Like