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FrozenGate by Avery

passing 532 through Yellow highlighter dye

vortish

vortish

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Feb 24, 2014
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Hey guys

While trying to find out something my 12 year old daughter could do as a science experiment for school we were messing around with the dye out of a yellow high lighter and were testing wavelengths on the yellow dye. We came up with some predictable results on most of them. The one that kind of was the shock was the 532 nm at 40mw and the results were nothing sort of cool. any way I took some pictures and let you be the judge.

10112-1011141721a.jpg


10111-1011141721.jpg
 





The 532nm is causing the dye to fluoresce. 405nm should light it up even better. With a low powered 405 it should look better with the laser being less visible, and the dye more reactive.
 
Nice pics, I'd love to do this but 200mW (atleast 100mW of green, rest is ir) of green is a little too scary to do this with.

Always thought 405 would have the coolest results.
 
I have had the same thing happen with an orange colored car washing fluid.
The interesting thing is that at 405nm nothing interesting happens.

Here is the picture. 532nm is 60mW, 405nm is 32mW and 650/660nm is 15mW
The picture is taken looking down into a plastic cup.:)

10113-a.jpg


It turned out decent for a phone's camera:D
 
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I've noticed odd things when using 532 and 405 through tonic water and using safety goggles. There appeared to be fluorescence but it looked like it was towards the red end of the spectrum. It was hardly noticeable but I'm sure it was there.
 
Interesting. Still trying to wrap my mind around a green light causing anything to fluoresce. Thanks for your help on my new purchase. For that, I am going to rep+ for your help and support.
 
5mw of 650nm
10117-1006142354.jpg


87mw of 520nm
10116-1006142355.jpg

10115-1006142355a.jpg


1.5w off 445
10114-1006142357.jpg


this is other wavelength passed though the same medium
 
yeah. fun stuff. ^^ florescent papers and cardstock do this too. UV lasers do similar things without being visible at all...I remember I got a nice sunburn from a large series 74 HeCd one time...:whistle:
 
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Still trying to wrap my mind around a green light causing anything to fluoresce.
Click to expand...

The green photons are absorbed and excite the molecular electron orbitals, which then re-radiate the energy as the orbitals relax to the ground state. Some of the energy is radiated as a lower-energy photon (in this case, yellow) and the remainder is converted to heat. Pretty much any wavelength of light can excite fluorescence, even IR. It just depends on the specifics of a substance's molecular orbitals; it is not a UV-only phenomenon.
 
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