There are laser addressed liquid crystals and ferroelectric crystals that are also laser addressed. You as a mere civilian will not be getting your hands on them any time soon, sorry. Both are Wassenaar and ITAR controlled technologies. There are also dyes that photobleach temporarily, but those are recovering too fast for what you want to do. Addressible Light valves and eidophore went out of style decades ago. I've actually had my hands on a working light valve, but that was a one time gift from a special friend. You could try DMDs...
Steve
Last edited by mixedgas; 04-02-2018 at 13:22.
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...