What do I use to expand an red Hene for a denisyuk hologram?

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Expand view Topic review: What do I use to expand an red Hene for a denisyuk hologram?

Re: What do I use to expand an red Hene for a denisyuk hologram?

by BobH » Tue Dec 24, 2019 10:18 am

Here's a good technique: https://holographyforum.org/forum/viewt ... TReh7I2Ueg

Re: What do I use to expand an red Hene for a denisyuk hologram?

by BobH » Tue Dec 24, 2019 10:06 am

Consider trying things you can find around the house for free. Find an old camera, bash it apart, and harvest some lenses from that. Try passing the light through areas on a wine glass stem. Be careful with the back reflections! Glass marbles? Glass door knobs? An old projection TV? Lots of things in everyday life now have lenses in them. Experiment, but always be careful about those back reflections.

Diffusers work too. Look for pieces of frosted glass. Go to a local glass shop and get some scraps for free or cheap.

Re: What do I use to expand an red Hene for a denisyuk hologram?

by thycore » Sun Dec 22, 2019 7:28 am

Take a microscope objective

Like this :

https://m.fr.aliexpress.com/item/326513 ... a08&is_c=Y

A x20 could be okay

What do I use to expand an red Hene for a denisyuk hologram?

by Leek-leek5 » Fri Dec 20, 2019 4:23 pm

Looking for a inexpensive way to turn the narrow beam in to a object beam.

@ 17:15 he says he's using a concave mirror. Can I pickup a concave mirror off eBay and do the same?
https://youtu.be/5IszBMYJ5Ks

Links to the iteams would be much appreciated!

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