Very good job David i am sure you can make with this device perfect clean color holograms.
I think it is also very easy to clean the laser beams with a spatialfilter, maybe it is tricky with backreflections.
Never get the beams so perfectly alignt as in this setup.
I can' t wait to make color holograms when i receive my devices.
Laser pico projector for making color holograms
-
- Posts: 19
- Joined: Sun Sep 27, 2015 9:01 am
Re: Laser pico projector for making color holograms
Ok managed to see fringes in all three colors!!!, Fizeau interferometer with a nice chunky prism to divide light up so it’s not overlapping, needless to say this is exciting !
- Attachments
-
- F8ECB78D-7052-4842-BB4A-961926AC5915.jpeg (1023.26 KiB) Viewed 27235 times
Last edited by holomaker on Sun Dec 02, 2018 4:33 pm, edited 3 times in total.
-
- Posts: 19
- Joined: Sun Sep 27, 2015 9:01 am
Re: Laser pico projector for making color holograms
One step away from a portable micro color holo camera.
Re: Laser pico projector for making color holograms
Another view ...
- Attachments
-
- 193CA31A-1C3E-4F66-B5A5-250BEAB56037.jpeg (985 KiB) Viewed 27236 times
-
- Posts: 805
- Joined: Wed Jan 07, 2015 2:10 pm
Re: Laser pico projector for making color holograms
Good going Kristiaan and Dave!
Re: Laser pico projector for making color holograms
Holomaker: Seems to also the blue diode produce fringes. Could you please tell us currents and aprox. temperature of the device? When I see your last posts I start to be impatient in waiting to receive it!
Kristiaan: Back reflection from spatial filter can destabilize diodes - it create external cavity, but when it is stable enough, it can also stabilize it, I hope that in this nice compact device this effect can be utilized.
Kristiaan: Back reflection from spatial filter can destabilize diodes - it create external cavity, but when it is stable enough, it can also stabilize it, I hope that in this nice compact device this effect can be utilized.
Re: Laser pico projector for making color holograms
We did a Lippmann direct image with this projector:
>Zilux Figura color photopolymer material, 450, 530, 640 nm. Film directly laminated onto a mirror.
>Zilux Figura color photopolymer material, 450, 530, 640 nm. Film directly laminated onto a mirror.
Re: Laser pico projector for making color holograms
Excellent to hear these lasers are actually making holograms now ! For seeing if my laser is staying single frequently ( or nearly), I use a Fizeau interferometer set up, easy to use, please try it on any laser! Pictured below is the current set up, mine is fancy cause I used a prism to separate out colors ( so they don’t overlap), but all thats needed for this test is a clean glass slide, a lens and a piece of paper ...
- Attachments
-
- 713304A6-E206-4634-A45D-7E80FBB432C8.jpeg (810.1 KiB) Viewed 27180 times
Last edited by holomaker on Wed Oct 17, 2018 3:50 pm, edited 1 time in total.
Re: Laser pico projector for making color holograms
Ok that confirms it , this light engine will make a color hologram ... low blue power 10mw, w a long exposure on Convestro. Very hard to resolve this color with the naked eye, camera actually sees it better! How often does that happen?
- Attachments
-
- EA877840-70E0-4771-B1BF-A27F9C4BFC0A.jpeg (1.12 MiB) Viewed 27142 times