Search found 51 matches

by Loic74
Fri Jan 19, 2024 9:59 am
Forum: General Holography
Topic: Moving the object to reduce speckle?
Replies: 9
Views: 4095

Re: Moving the object to reduce speckle?

The tip of my fiber is not moving, it is the body of the fiber which I am moving in ordert o mix internal modes
by Loic74
Fri Jan 19, 2024 5:32 am
Forum: General Holography
Topic: Moving the object to reduce speckle?
Replies: 9
Views: 4095

Re: Moving the object to reduce speckle?

Greetings I tried something similar and was also surprized by the results: I used a 600µm core multimode glass fiber to mix RGB lasers. One advantage of such a fiber is that it is very easy to couple in the three wavelengths and at the output they are well mixed. One disadvantage is that the output ...
by Loic74
Fri Mar 24, 2023 12:40 pm
Forum: General Holography
Topic: Beam Splitter Problems
Replies: 4
Views: 4589

Re: Beam Splitter Problems

If you feed your reference beam into a spatial filter, the simple thin plate beamsplitter may work as the reflected beam would be focused outside the pinhole.
by Loic74
Mon Jan 09, 2023 5:16 am
Forum: General Holography
Topic: Has Litiholo disappeared ?
Replies: 5
Views: 3396

Re: Has Litiholo disappeared ?

They seem to be concentrating on their printer: https://www.kickstarter.com/projects/75 ... ts/3702748
by Loic74
Sun Oct 02, 2022 2:35 pm
Forum: Optics
Topic: online ray optics simulator
Replies: 1
Views: 11795

Re: online ray optics simulator

Thanks
I use this one for 2D optics, which is quite simple. It is avail. in english
http://jeanmarie.biansan.free.fr/optgeo.html
by Loic74
Sun Oct 02, 2022 2:29 pm
Forum: General Holography
Topic: fresh air intake for lab
Replies: 2
Views: 4645

Re: fresh air intake for lab

Thank you for sharing.
So you have air intake and "outtake" in your lab? From what I understand this blows new and warmed air into your lab, and I suppose you have an air extraction somewhere?
Thank you
Loic
by Loic74
Tue Apr 19, 2022 3:10 pm
Forum: General Holography
Topic: Bayfol HX polymer
Replies: 5
Views: 5878

Re: Bayfol HX polymer

There are some papers out there on shifting the HX200 material. From what I recall it involves using various materials to laminate onto the HX200. One of those articles had a table listing material vs shifting
by Loic74
Thu Jan 06, 2022 5:30 pm
Forum: Gallery
Topic: resent color hologram on bayfol
Replies: 5
Views: 6537

Re: resent color hologram on bayfol

Can you explain the reason for heating after exposing (I think Zilux requires this but did not know about Bayfol) as well how you use water to mount on glass?
Thanks!
by Loic74
Tue Jul 27, 2021 11:01 am
Forum: General Holography
Topic: Bayfol
Replies: 20
Views: 9540

Re: Bayfol

Thanks for this interesting info. What is the point of using UV glue to laminate the film on both sides? I mean, the side with the photopolymer already sticks to the glass plate by itself, right? Is it to have it more permanently afixed? Or is it that using UV resin makes it easier to laminate witho...
by Loic74
Wed Apr 21, 2021 2:01 am
Forum: For Sale / Want to Buy / Trade
Topic: Osram PL530 530nm laser diodes tested @75mw SLM
Replies: 72
Views: 138474

Re: Osram PL530 530nm laser diodes tested @75mw SLM

holomaker wrote: Mon Apr 19, 2021 5:41 pm Remember these green lasers were in production for only a short period of time, and then quickly replaced w direct (easy to modulate) green diodes ....
Interesting, I did not realize that