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None of what you just posted is from the reference I gave you., proving my point.

I won't engage with you until you acknowledge my reference and can discuss only it.

You won't, because it proves you wrong and verifies Rich's and my direct observations and measurements.

DE dependance on polarization, Do you have a reference for this? I posted it here before and you "hand-waved" it away saying you "didn't have that book". Look it up. I posted pics of the pages of the book on the facebook holography forum page. Look it up. Rich Rallison got it ri...

When I used a lens in the past, I would get Airy disks on my Ultimate plates due to the back reflections of the top glass and Kodak film. I have never heard of the index-matching oil, so I will look into that. I clamp the top glass to the Ultimate plate as shown: https://drive.google.com/file/d/1Va...

I wouldn't use tape to diffuse the beam. That's probably why your DE is low. I'd recommend using a lens to spread the beam. I'd also recommend using index-matching oil between the emulsions, and a smoked glass backer also index-matched to the back, all to prevent Fresnel reflections. Polarization ma...

So is a thin hologram Q=<10 (as you stated) or Q=<0.1?

Are transmission holograms necessarily "thin" (as you stated)?

Is Covestro's 16 micron material a "thin" material with visible light (again as you stated)?

No explanation necessary.

So is a thin hologram Q=<10 or Q=<0.1?

Din wrote: ↑Sun Jan 05, 2025 3:43 pm It's only true for thin transmission hologram - thin being based on the idea that Λ/d <~ 0.1.

YOUR math is the only math in question. The same math that led you to argue that a transmission hologram is "thin" if Q= <10.

Don't know. Peeling it off the original mount that replaced the cover sheet may be difficult. It's a thick volume material so keeping the film exactly as flat as it was during recording is important.

Sandwich it in glass with optical adhesive. For example, Ceres and Zeiss are putting the material into windshields for use as head-up displays. Pictorial holograms also are best sealed, but shrinkage of the adhesive will be the issue to deal with because of the weak bond of photopolymer to substrate...