Great video. Thanks!!! Waiting for the next one!

Incredible videos and alignment skills. Make more videos!

Thanks for the video!

Superb and great video! I'm aligning a THz semi-confocal cavity. Do you have any good resources for me? It's actually getting much harder than what I thought, and we don't have cameras for that. The only feedback from the cavity that I have is transmission, which is a single waveform/number vs. cavity length.

In the tutorial video of F-P, there are few errors in the draft. First, the X = 2d/cos(theta) instead of 2d/sin(theta). It doesn't affect the perfect transmission case because he assumes that X is a multiple of Lamba, therefore the phase factor drops off still giving the correct case of pure transmission. Second, Finesse is defined as 4r ^2/ (1- r^2), instead of 4r^2/ (1-r^2)^2! Apart from these two the video id good!!

Could you please put the link for your other videos?

We have also buit scanning high finnese FPIs, we used cilindric piezos. The equipment on the base is fantastic. Where can I buy this.?

Why do you use a beam folding technique????? Is it absolutely necessary??

Why do you choose 4 GHz as the FSR? If the FSR is 40GHz, it seems the experiment results will not change, right?

Do I know where to find these mirrors that semi reflective mirror? TY

suggestions ?? prisma

im looking for a fresnel lens , for laser project

DEfraction

Why do you choose 4 GHz as the FSR? If the FSR is 40GHz, it seems the experiment results will not change, right?