Green laser guys: Do you find red stuff to disappear?

Justin W · Post by **Justin W** » Sat Sep 20, 2008 9:47 pm

Howdy all

I lase at 532nm and feel like I've noticed before that anything colored red seems to become oddly colorless under green laser illumination.

I am designing a new plateholder and am considering coloring it red instead of black in an effort to have it not appear in holograms.

Has anyone else who lases green tried this?

Kiffdino · Post by **Kiffdino** » Sun Sep 21, 2008 7:56 am

i dont see the point colouring your holder red.
black will always suck up more light then red...
of yourse your lab will look nicer in daylight

MichaelH · Post by **MichaelH** » Sun Sep 21, 2008 5:24 pm

And depending on the quality and specific mix of the paint you may actually find that red glows a bit under green light and ends up looking more like yellow.
Go with flat black.

Justin W · Post by **Justin W** » Tue Sep 23, 2008 8:22 pm

10-4 and roger, good buddies!
Flat black it is.
Thanks for getting back to me on this one.

Hans · Post by **Hans** » Wed Sep 24, 2008 12:35 pm

I discovered by accident that blood is totally invisible in red safe light and black in green laser light. I cut my hand on a glass plate and did not see any blood in the safe light, so figured it was just a scratch. Then when I went to adjust the laser beam and saw black spots on my hands. I turned on the white light and my garage looked like a scene from Friday 13th. Amazing...all the places ones hand touches in the timespan of about 10 minutes.