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holomaker wrote: ↑Mon Oct 08, 2018 6:17 pm Ok success 650nm @20mw !
Shot using Liti film w 2-4 min exposure

2 to 4 minutes seems quite a long exposure isn’t it ? Didn’t you mean 2-4 seconds instead ?

I reduced my microscope objective from X40 to X10, as a result the brightness of the laser was unsuspectedly higher !

I guess this plate has been overexposed xD !!
It is literally white-opaque in the center area !

This lens type would for sure expand the beam, but would it also clean the N1+ order harmonics of the laser ? I sorta read it’s best to have a clean airy disk to work with my set up to have better resolution & more uniform exposure ?

I’m reading this astonishing book from H.I Bjelkhagen about silver-halides processing and I came to chapter 4 where it is discussed possibility to somehow fix or de-sensitize a developped hologram. Fixing with thiosulfate, Or Desensitizing with Phenosafranine In my quest of producing reflection holo...

Hey folks,

I believe I now need to add spatial filters to my set up, any of you would still have some for sale?

Thanks !

My mind just blown up.

Thank you so much for these explanations I’ll need some dozen readings to fully compute all this info !

Thank you Martin for your time & explanations, I purchased that book right now, I'll sure give it a read ! I'm in the step of the learning process what I need to understand better what happens in my materials to fine-tune my set-up and results :) So... how is this possible to have a Rehalogenati...

Hey folks, In my quest of understanding emulsion shrinkage (ie. when it does happen in my process). I came to an interesting reading here : https://ocw.mit.edu/courses/media-arts-and-sciences/mas-450-holographic-imaging-spring-2003/readings/holochemistry.pdf bleach.jpg Question, anyone know what kin...

This poor drawing of mine represents my current understanding of the chemistry and over-time phenomena : bleach_not_bleached.png There are 2 assumptions that I might have misconception about : - Isn't light supposed to bounce off the deeper layers of the emulsion to reconstructs the virtual image ? ...

Hey by the way Valéry I think I just ordered your telescope hologram on eBay ( Loïc )