Search found 89 matches

by HoloM
Sun Oct 18, 2020 6:43 am
Forum: Beginning Holography
Topic: Horizontal stripes - along same depth, like ISO lines...
Replies: 17
Views: 1121

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?
by HoloM
Sun Oct 18, 2020 5:55 am
Forum: Beginning Holography
Topic: Horizontal stripes - along same depth, like ISO lines...
Replies: 17
Views: 1121

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...
by HoloM
Sat Oct 17, 2020 4:44 pm
Forum: Beginning Holography
Topic: Horizontal stripes - along same depth, like ISO lines...
Replies: 17
Views: 1121

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...
by HoloM
Mon Oct 05, 2020 12:55 am
Forum: Gallery
Topic: Skulls!!
Replies: 16
Views: 6866

Re: Skulls!!

Again one more
by HoloM
Mon Oct 05, 2020 12:54 am
Forum: Gallery
Topic: Skulls!!
Replies: 16
Views: 6866

Re: Skulls!!

And a few more
by HoloM
Mon Oct 05, 2020 12:42 am
Forum: Gallery
Topic: Skulls!!
Replies: 16
Views: 6866

Re: Skulls!!

More...
by HoloM
Mon Oct 05, 2020 12:41 am
Forum: Gallery
Topic: Skulls!!
Replies: 16
Views: 6866

Re: Skulls!!

A few more ...
by HoloM
Fri Dec 28, 2018 8:33 am
Forum: Beginning Holography
Topic: Two of the same laser instead of beam splitter?
Replies: 4
Views: 4559

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.
by HoloM
Fri Dec 21, 2018 12:44 am
Forum: General Holography
Topic: PLS HELP! Hologram vanished from holographic watch
Replies: 2
Views: 4253

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...
by HoloM
Thu Apr 26, 2018 2:34 pm
Forum: Off Topic
Topic: SLM guy here!
Replies: 9
Views: 9458

Re: SLM guy here!

Hi Peter,
do you know the price of the SLM?
Thanks