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Old 07-23-2010, 04:47 AM #1
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Default Holography?

I'm surprised no one tries/tried this on here yet. Did a search and everything. No one? lol


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Old 07-23-2010, 05:02 AM #2
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Default Re: Holography?

Its pretty complicated stuff. You need a very large beam table for starters, the vibrations from cars passing by hundreds of yards away will completely ruin the hologram if the beam is not isolated perfectly
Then you need the film and the optics, and a strong laser. There is info out there on it, but it's not easy or cheap.
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Old 07-23-2010, 05:11 AM #3
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Default Re: Holography?

I've heard of amateur holography, done with non professional setups. It's not impossible. There isn't even a single post on this forum relating to it, lol.
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Old 07-23-2010, 05:16 AM #4
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Default Re: Holography?

Well this is Laser "pointer" forums, the things of the most interest to people here are burning things

I would recommend you do a Google search for holography forums if you are serious about messing around with it, but your right. You won't find too much help here, sadly.
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Old 07-24-2010, 03:50 AM #5
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Default Re: Holography?

I'm not sure if anyone has used a laser pointer to make holograms.

When I made holograms for a high school science fair (about 20 years ago), I borrowed my school's Spectra Physics 0.5mW HeNe laser and optics (lenses), and my teacher gave me a roll of special (holographic?) film, and I also was able to use the photographic dark room for processing.

My setup was very crude, all put onto a 4' x 8' plywood board on sawhorses in my grandmother's basement. The optics and film holder and object holder all were placed in separate buckets of sand to help stabilize the overall setup....

Despite the setup being crude and very susceptible to vibrations, I managed to get two decent holograms out of the deal. Granted, it took me many tried prior to the successes, but it was all I could afford at the time. It was a great learning experience to say the least.

So, it is possible to make holograms with a crude setup. I still have the holograms to prove that it can be done.
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Old 08-24-2010, 12:06 PM #6
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Default Re: Holography?

I have just arrived at this forum with similar questions about holography in mind, one site you might want to have a look at is holoworld here:
Holography, Holograms, Laser Art

They have guides to making holograms using the cheapest of the cheap 2 laserpointers and much more.
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Old 08-24-2010, 10:38 PM #7
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Default Re: Holography?

Yes you can do holograms with 5mW laser diodes, even with "new" 445nm laser diodes at the single mode range.

I am gearing up to dust off my holography table, build my 445nm bench model and get back into holography... So many projects, so little time

And, no it is not that complicated to make holograms. Yes, you have to make sure everything is stable (by observing no movement using an simple interferometer) but you can do holograms using a sand table.

Check this product: http://www.fatwallet.com/redirect/bo.../Product/77727 I am ordering one kit next month, for winter projects and just for the plates.
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Old 08-24-2010, 10:40 PM #8
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Question Re: Holography?

Quote:
Originally Posted by Limecat View Post
I'm surprised no one tries/tried this on here yet. Did a search and everything. No one? lol

Are considering getting into holography?
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445nm: Built ~3W and Jayrob Built - 445nm <1W
532nm: 70mW and ~200mW
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Old 08-25-2010, 07:09 AM #9
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Default Re: Holography?

I had a holography question that i was trying to chase down the answer to, which is how i arrived here.
I was looking at the guide on holoworld to making portrait holograms using 8 photos and recording them onto the plate in 8 strips and the news article on the same site showing students creating a true RGB hologram and it got me curious with the availability of cheap blue diodes and modifications such as using a PS3 drive sled to make rgb lasers would it be possible to create colour portrait holograms by replacing the reverse processed B&W film with colour slide film for the 8 portrait photos and using a home made RGB laser? or is there some major stumbleing block i havent understood?
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Old 09-02-2010, 05:22 PM #10
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Default Re: Holography?

I used a guidebook called "shoebox holography"

Got a cheap <5mW pointer, used an EL nightlight to see what I was doing, and used glass plates because they're flatter and easier to prop up than film.

opto-isolation table? the kitchen floor (my house was on a slab, though. So cement with linoleum)

Most expensive part was the lens, but I imagine you could just unfocus the laser module too....

Rather than split the beam using a beam splitter of some variety, the beam is split into the reference beam (straight from the laser) and the beam with the image information (reflected off of the object). These recombine at the plate and form the interference pattern.

after exposure, I'd take the plate to the bathroom, where chemicals were already set up, and just sloshed 'em and rinsed 'em. Painted with flat black paint.

~2 of every 3 turned out nicely.

This was fun and easy. I was a young teen at the time.
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Old 10-01-2010, 12:08 AM #11
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Default Re: Holography?

Have you guys ever seen this site of Yves Gentet??? It rocksssss!
Best on the planet!!!

Holography and Holograms. Yves GENTET, the Ultimate quality
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Old 10-02-2010, 01:57 PM #12
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Default Re: Holography?

Go here,
Laser-Projects Page

on other venues, this gentleman has done stuff in his basement with diodes, that is nothing short of lab grade. Including getting Nichia blues to SLM with grating feedback.

Frank Defritas is another who has made it possible.

Tung Jeong's son has taken over the business and sells the film:

INTEGRAF--Holographic Film, Plates, Kits, and Resources

If the folks at Integraf/Holokits can't answer your question, then the only answer is in a academic journal some place.

steve
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Old 10-03-2010, 03:43 PM #13
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Default Re: Holography?

Yves Gentet's Ultimate plates and film are just like DCG!!! Viewable from almost 180 degrees!
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Old 10-17-2010, 01:50 PM #14
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Default Re: Holography?

Lasers and holograms! I did about 30 holograms using a 5mW red and green diode about 4 years ago. The wife got tired of all the costic developing chemecals. I was using the bathroom in our little appartment for my dark room. she hated it. It's a little tricky, as you have to make the exposure in a sand box to damping all vibrations. You have to turn off every thing that vibrates in the house, wait for no cars driving by out side, and hold your breath while making the exposure. All you need is Glass Photo Plated, the chemecals to develope them, a laser, and a sand box.

http://litiholo.com/hologram_kits.htm

It's a fun hobby that you can use your Lasers with. give it a try. You'll love it!

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Old 11-15-2010, 06:53 PM #15
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Default Re: Holography?

I would like to invite you to check out my new web site at nlutie.com/ewesly. It was done for a graduate level class I was taking at National-Louis University in the Technology In Education Master’s of Education program. Making a Test Strip is the part of the site that was the project for the class, but it kind of grew from there. I certainly have more to post, but I used up my server space allotment, so you are witnessing this site in its nascent stage. But there are many of my classroom handouts and articles on making holograms.

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Old 11-17-2010, 09:32 PM #16
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Default Re: Holography?

Quote:
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Are considering getting into holography?
For fun? Yeah I was. Plus I didn't see any threads relating to it here so I started one.
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