Bath interferometer (for inspecting diamond turned optics?)

Sunday optics playground project: garbage proof of concept of a Bath interferometer. Need better quality fringes before I can actually do analysis on them though. You can only machine what you can measure, so I’m trying to figure out a robust metrology solution for parts coming off the DTL. This type of interferometer is one such option. (The sample spherical mirror I used in this setup was not diamond turned, for clarity)

[@fxm5715]

And here I am, happy if I can hit my target within a thow.

[@IvanStepaniuk]

Waiting for @huygensoptics to chip in...

[@jimsvideos7201]

Looks like I have some learning to do.

[@PeregrineBF]

Low-coherence requirement common-path interferometer, allows using a cheap diode laser instead of an expensive gas laser like in most other interferometers, or an expensive piezoelectric scanner & optics setup like in a coherent scanning interferometer.

[@jimsvideos7201]

@@PeregrineBF Back to my first comment 😄

[@PeregrineBF]

@@jimsvideos7201 Yep, but now with more terms to search for! The Huygens Optics channel has some good videos on interferometry.

[@Spirit532]

I see no bathtubs! Clickbait! :^)

[@Scrogan]

Looks like a transit

[@cvgarry4048]

😜 P r o m o S M

[@BigBoss-rh7zq]

Buy Zygo

[@cylosgarage]

Only if you pay for it

[@BigBoss-rh7zq]

🙂@@cylosgarage