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Ok Nana check your pM box

Very interesting device to start the color holography. Since the color emulsions have similar sensitivities in green and red, is it possible to adjust the power emitted by the green laser to make it close to that of the red laser? Thank you.

stefanosica wrote: ↑Sat Feb 08, 2020 12:42 pm Very interesting device to start the color holography. Since the color emulsions have similar sensitivities in green and red, is it possible to adjust the power emitted by the green laser to make it close to that of the red laser? Thank you.

Yes any adjustment is possible, I thought I had the color balanced as seen in the photo oh the Haring pins , do you think it’s to green?

I think it is important to be able to balance the two colors by doing exposure tests in red and green. I have read that very often different batches of the same emulsion have different sensitivity curves. In any case, you can always play on the exposure times of the individual lasers. The important thing is that the two lasers are collinear and that the circles of the expanded rays have the same diameter and have the polarization planes parallel to them. Big work ! Congratulations ! As soon as the device will be available on ebay I could definitely consider buying it.

Yes covered all that ... To make it-less complicated the green and red are balanced.. it is possible to adjust , have a couple made and ready to go.. if you want one lmk. Send me a PM. Here’s an expanded beam using a achromate lens only.there are two access holes that allow you to adjust color output ..

If the diameters of the beams are off that’s ok as there’s plenty of green light to throw away if needed...

The idea was to make full color holography easier as all that is needed to add a sapphire to it ..

Lol Nana , now I can’t see the messages you sent me here on the forum, says my inbox was full? Now empty and still nothing !

thanks for the laser
here is my test

Mr Astro wrote: ↑Fri Sep 11, 2020 8:30 pm thanks for the laser
here is my test
little old lady.jpg

Can you provide a couple more pictures/information ? Nice work