high-power violet scanning a glow-paint wall?

[mixedgas]

yes, I understand. I'm looking forward to prices dropping on the burners as well.

I have a material that changes from white to blue under a uv laser beam. Persisntance is long, on the order of 15 seconds. Daylight laser shows.
tested it with a UV hecad about 3 years ago,.

Steve

[shobley]

Wouldn't this effect work with any kind of laser - does the paint only react to the blu-ray band?

[drlava]

Wouldn't this effect work with any kind of laser - does the paint only react to the blu-ray band?

the blue and violet lasers have a higher photon energy, so they illuminate fluorescent materials a lot better. Typically, a flourescent material must be excited with a shorter wavelength than it glows at. You will have a difficult time finding a material that reacts visibly to red lasers, because it would glow in the infrared spectrum. There are materials that will glow red when excited with a green laser. The materials that flouresce green to a blue/violet laser are the most striking because of eye sensitivity and the apparent high strength of response to strength of illumination.

[mliptack]

Right, but if you are using glow in the dark paint almost any laser would work, i know 532nm charges green glow paint pretty well.