This video is about making a Fizeau interferometer using a DPSS green laser similar to my Zygo GH. I used parts I've collected but the optics aren't all that expensive.
Great video, I have noticed with my simple Michelson interferometer that fringe contrast varies with time for a DPSS green laser diode. Have you seen this ?
Thank you Ed, always a pleasure when you upload.
Great video, I have noticed with my simple Michelson interferometer that fringe contrast varies with time for a DPSS green laser diode. Have you seen this ?
I haven't seen it but can't say for sure. The worst I've seen is in warm up but fringes were still always visible.
@@Opticsed ok thanks. This probably varies with different laser diodes.
Thank you for the video.
Where can I get, or learn how to make a spherical reference?
Thank you Ed, was wondering if you have tested its performance? and compared with Zygo