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FrozenGate by Avery

Holography






Gryphon said:
Wow, you lost me at stable......:D That sure doesn't sound like its gonna come cheap
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Nope, usually not. Laser systems that are suitable for holography need to have very good specs, which means very good engineering, which means high cost.
 
I've read somewhere around here that someone had made a hologram of a small object (~6cm) using an LPC-815 diode, so it should be possible... I was searching for info on "coherence length" at the time IIRC.
 
My first holography experiments was done with a he.ne tube ..... but was almost 18 years ago ..... i was not thinking about DIY holograms from years *nostalgy* :)
 
I just wanted to say that a few years ago I had great results with holography using a <5mW red diode module driven by 2 D alkalines and driver. It was a very simple setup, where the laser light goes through a lens, goes through the holographic plate, reflects off of the object, and then creates an interference pattern on the holographic plate from the reflected light and the emitted light.

I did this mostly on my own, but with my father's help, when I was about 14-ish? So it's very easy. My optical table: kitchen floor.

After the exposures, we developed them and sealed the gel with some black spray paint. We used the glass instead of the film. It was easier to use.
 
dr-ebert said:
I've read somewhere around here that someone had made a hologram of a small object (~6cm) using an LPC-815 diode, so it should be possible... I was searching for info on "coherence length" at the time IIRC.
Click to expand...


Coherence length effects the size of holograph that can be made. Single frequency diode lasers ( Single emitter such as LPC-815 diodes ) can be used for holography , so can polarized, single mode HeNes.

People do tend to go for better lasers, but both of the above work. HeCd lasers used to be the most popular for holography use, the wavelength was perfect, the beam specs could be great and the power consumption wasn't huge like an Argon or Krypton ion laser ... this was the way to go before more advanced solid state lasers were available. ;)

A Coherent COMPASS is usually a great laser for holography - compact, superb beam specs, low power consumption ... solid state.
 
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BobH, yes! That was the book! Shoebox Holography, I remember it now that you say it. It was some cheap-looking spiral bound book, but the holograms I made, my best one was awesome, sharp as a razor, very wide view angle, you could even see reflections and scratches on the subject (some christmas bells tree ornaments)
 
I made a few holograms back in 1988-1989 in HS physics class.

0.5mW Spectra Physics HeNe laser
appropriate lenses
developing chemicals
film
(all supplied by my high school)

I did the whole project on a 4' x 8' plywood board on sawhorses, and the optics "stabilized" in buckets of sand, all in my Grandmother's basement. film holder was made out of scrap wood.

Sure, a lab environment would have been MUCH more stable and my holograms much higher in quality, but hey. It was FUN!

I still have my notes and successful holograms.

I would think you could make holograms from a DIY laser....
 
you can do it with a simple DIY red laser diode. Just got done doing one.
 
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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