Fluorescent lens?

[nikosb]

I have seen threads showing how a green laser passing though olive oil will change its color to yellow or orange depending on the olive oil. I've read on this forum about the fluorescence phenomena and that there are various materials (minerals and dyes) that exhibit similar behavior to the example with the olive oil. Is there a lens or special glass that is commercial available and does this thing? Let's say I have a green pointer laser, I shoot it through a lens, the beam inside the lens (or the entire lens) turns yellowish, the beam exits the lens and it is green again. I attach an image for illustration.

I've searched on google and on this forum but I was only able to find examples of materials but not any off the shelf glass or lens.

 

[crazyspaz]

Why? You shouldn't be looking into the lens when a laser is on, and that's the only way you would see it.

 

[nikosb]

Why? You shouldn't be looking into the lens when a laser is on, and that's the only way you would see it.

I guess this video will help illustrate the effect I am trying to accomplish:

https://www.youtube.com/watch?v=uOU4kMUHGBY

The dyes glow when a laser strikes them, you can see them glow from any angle. I understand blue and green lasers are better because they have more energy. When the laser strikes fluoresceine or uranine they dyes glow bright yellowish. Is there a fluorescent lens cap that I could screw in front of a laser pointer that would have the same effect (basically the lens would glow a different color than the laser)?

 

[Teej]

If the lens is absorbing the energy, I would think the beam would suffer?

Maybe you could do a bezel rather than a lens?

That way, the beam would be intact, but the scatter might be enough to fluoresce the bezel?