Originally Posted by
yaddatrance
Love this!
Some food for thought... If your glow in the dark material is similar to what I've played with, red lasers should extinguish the glow immediately. I don't know how far in wavelength the behavior extends, but I was using a HeNe laser at the time
so at the very least the 635nm pointers should be in the ballpark.
But anyways, if you scan with a red right after you might get really cool effects.
Thank you! Yes, red light extinguishes the glow from the strontium based paint, but mw for mw the erase effect is too slow to be practical in my experience. There are also some technical issues that add to the challenge of erasing. For the strontium based paint I use, ~700nm is the sweet spot for effective erasing. (A HeNe is pretty close to this, right?) I’m planning on attacking it with high doses of LEDs in the near future as a broader eraser, but the cost of the diodes might become an obstacle.
On the other hand, the zinc sulfide stuff is easy to erase with the right wavelength of IR, but that paint fades so quickly, it wasn’t necessary. I later repainted with strontium based paint anyhow, so that ship has sailed in my space.
David
"Help, help, I'm being repressed!"