Many materials that are fluorescent will also lase.
The problem is that they also need to be optically clear for lasing to happen. Most fluorescent dyes will lase if they are in a solvent solution and dont have any additives which will hinder lasing.
every solid state laser works on this principle as well. Yag fluoresces under 808nm light, then mirrors are added and since the yag has a clear optical path through it, you get lasing.
You can even use methanol and a highlighter and put it in a clear vessel, blast it with high energy pulses of UV light and it will lase on its own, with no mirrors or anything.
Fluorescence is never coherent, it is the light created by electrons jumping to lower energy states. BUT if you use a mirror to make a phonton cause those electrons to drop an energy state, the electron produces a photon exactly the same as the one that hit it, making coherent light.
It's like saying "an argon laser isn't a laser because the plasma glow isn't coherent". It is the glowing itself that allows the lasing to happen
SO to answer your question, YES, but not unless conditions are right. :evil:
