Laser pumped LED?

Classify this in the “shower thoughts” category…

We see large gains in output when using a RLT collar due to the reexictement of the phospohors. Would one not see a similar increase by pumping the phospohors with an external laser source? LEDLEP if you will.

I don’t know if The_Driver posted something in this forum, but here’s a thread from the TLF (german): Laser-Phosphor-Erweiterung von Projekt Excalibur | Taschenlampen Forum