Search found 89 matches
- Sun Oct 18, 2020 6:43 am
- Forum: Beginning Holography
- Topic: Horizontal stripes - along same depth, like ISO lines...
- Replies: 17
- Views: 18330
Re: Horizontal stripes - along same depth, like ISO lines...
Another question, why do you view it in red laser light? It’s. Denisyuk setup , should be visible in white light . Which film do you use?
- Sun Oct 18, 2020 5:55 am
- Forum: Beginning Holography
- Topic: Horizontal stripes - along same depth, like ISO lines...
- Replies: 17
- Views: 18330
Re: Horizontal stripes - along same depth, like ISO lines...
Yes it’s obvious. The reference beam hits the plate from above and light is injected inside the plate from above. So you get internal reflections down the plate . Similar to the light guidance in a fiber . So take a black permanent marker like this one https://www.hygi.de/edding-3000-permanentmarker...
- Sat Oct 17, 2020 4:44 pm
- Forum: Beginning Holography
- Topic: Horizontal stripes - along same depth, like ISO lines...
- Replies: 17
- Views: 18330
Re: Horizontal stripes - along same depth, like ISO lines...
Cannot see the stripes you mentioned in the pictures and also not how your setup was, but often horizontal stripes occur when light enters the plate through the upper edge and makes internal reflections which lead to horizontal stripes . If that’s the cause it helps to paint the upper edge of the pl...
Re: Skulls!!
Again one more
Re: Skulls!!
And a few more
Re: Skulls!!
More...
Re: Skulls!!
A few more ...
- Fri Dec 28, 2018 8:33 am
- Forum: Beginning Holography
- Topic: Two of the same laser instead of beam splitter?
- Replies: 4
- Views: 6093
Re: Two of the same laser instead of beam splitter?
No, it will not work, as the two beams are not coherent and will never be. You have to use one beam from the same source.
- Fri Dec 21, 2018 12:44 am
- Forum: General Holography
- Topic: PLS HELP! Hologram vanished from holographic watch
- Replies: 2
- Views: 5904
Re: PLS HELP! Hologram vanished from holographic watch
No good news , so on the second picture you see already that it had begun vanishing on one edge. The problem with this watches is that they may have not been sealed very good and so moisture is going in very slightly, which damages the hologram permanently, maybe that big heat also has the same effe...
- Thu Apr 26, 2018 2:34 pm
- Forum: Off Topic
- Topic: SLM guy here!
- Replies: 9
- Views: 14537
Re: SLM guy here!
Hi Peter,
do you know the price of the SLM?
Thanks
do you know the price of the SLM?
Thanks