Laser-analogues of the other fundamental interactions?

[qeveren]

Someone on another forum brought up the idea, so I figured I'd toss it in here and see what I can find out.

So... can there theoretically exist an analogue to a laser, involving the boson one of the other fundamental interactions (strong, weak, gravitational)? What sort of properties would it have? Will a layperson like myself even understand the answer (or ask a question that isn't nonsensical)?

(I'm guessing the answer is 'no' for the strong and weak interactions, what with the charge-carrying bosons and all the weirdness that leads to...)

[Idobox]

Gravitational waves behave a lot like radio, and coherent radio emission is easy to make, so I guess you could have a laser equivalent for gravity by wigling big masses at the same frequency with the right phase pattern

[K^2]

That would simply be a phased array. Not laser. I believe, sonic equivalent of laser has been demonstrated in solids, using phonons. Everything else is complicated.

To have a laser, you must have a system that can emit or absorb a photon, and have it placed in an inverted population state.

This might work with gravity. A field of rotating masses might... gase? But I do not know how strong the effect will be. States involved are not metastable and much too macroscopic.

Other fundamental bosons are even trickier. Gluons are color-charged, and so are confined. If gluon laser could work, it would have to be in quark-gluom plasma environment.

Weak bosons would make good candidates. Anything that decays via weak mode only is already metastable for that very reason. Inverted population is a given, since ground state is vacuum. The trouble is getting enough of such matter together to observe effect. And the fact that once strong forces take over, you will have a major gamma release event.

[Idobox]

you can't tell the difference between the output of a phased-array and a maser, that's how it would be similar to a Laser. No stimulated emission, but a coherent source. By the way, free-electron lasers are basically just coherent synchrotron, and don't have any stimulated emission, but are still commonly referred as lasers.

I don't think there is any analogue to stimulated emission for other bosons. It exists for photons only because electron orbitals have discrete energies.