Lasers & Holography

OneNote has been written about ad-infinitum as a tool for note taking in meetings and classes, as a general information repository and as a collaboration tool but I'd like to introduce you to another use that I'm putting OneNote to.

Making holograms.

Or more specifically, documenting both the process I go through when creating a hologram and the results from that process in the form of notes and pictures.

As most of you will probably know, OneNote is a great repository for all sorts of information. It has allowed me to combine a number of sources into one place so that when needed, I can easily refer back to previous results when I'm making a new hologram.

For almost two months now, I've been working to figure out the exposure and processing steps to use in order to get bright and clean transmission holograms using my Coherent 315M and VRP-M film.

After blowing through roughly 68 pieces of film (mostly 1.5x1" in size) I think I've finally nailed the process to use for transmission masters.

JohnK on the holography forum had asked if I'd experienced any problems with delayed development of VRP-M.  He's been working on making holograms using a Coherent 315 and VRP-M film and was wondering VRP-M was sensitive to delays of several hours between exposure and development.

I normally develop right after exposure but did the following test to find out how VRP-M behaves.