Holographyforum.org / holowiki.org

Interesting stuff. Well I used my last sheet of Geola film today. It's the end of my holography experience. I'd say the most frustrating thing was trying and failing to get rid of bubbles. I built a small laminar hood and bought a double roller and an ionizer. Initially this helped a lot but for som...

BobH,

Do they peel it before that? Or just use the original glass and a new cover piece?

Cheers.

A follow-up question. So if Geola film is used to make HOEs, (presumably for further use) how do the final users deal with a fragile, easily scratched film that barely sticks to glass support plates? If seen users on this forum use screen protectors to laminate the hologram but what do commercial us...

Nice tip.

Cheers.

So after a lot of kerfuffle I finally got a Jodon 10um pinhole to go with the spatial filter I bought. It's a clever design, basically a magnet with two orthogonal flats holding the pinhole. The magnet has a teflon coated side that slides on another teflon coated washer on the filter. The magnet att...

I'm new to the term HOE. A quick look implies that it is a hologram used as a optical product, like a lens
rather than being used for artistic purposes.

Thanks for the reply.

Cheers.

I have been using the photopolmer for all of my experiments and am curious what its actual commercial use is. It's seems to be cheaper than film but require longer exposure times. I have not used film but the GEOLA stuff seems pretty easy to scratch and would require encapsulation to protect it. I c...

Din,

And they say alcohol is bad for you....

BobH,

Mode hopping is it. The He-Ne is crystal clear.

Cheers.

BobH, My set-up is simple single beam. I have been getting decent results. I'm just seeing stuff now that I ignored in the initial rush of "OOOh a hologram". For instance, I'm seeing the surface bulleye targets pattern that I am assuming will be be eliminated by spatial filtering. And the ...

Din, Yes holographic interferometry. I put a weight on an object, exposed for a while and gently removed the weight. Either my weight wasn't heavy enough or the removing caused changes in the objects position, but I never got any fringes. BobH, If your higher quality lasers are unstable, my twenty y...