Can surface plasmons be used to build GeV gamma-ray lasers?

[redirmigician]

I read a paper about coherent surface plasmon amplification by free electron pumping in an article a few days ago. It seems to work as some kind of free electron laser-like light source, and I wonder how high the energy of photons can go in this way. Also I read in another paper about "efficient" generation of "Extremely brilliant" and "collimated" MeV to GeV gamma rays in the plasma accelerator. I wonder if plasmonics can replace ionized gas to achieve this. There is indeed an idea of Plasmonic acceleration, right?

More information:
Creating surface plasmon polariton amplification using free-electron pumping to build a new kind of laser https://phys.org/news/2022-11-surface-plasmon-polariton-amplification-free-electron.html via @physorg_com

Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator https://www.science.org/doi/10.1126/sciadv.aaz7240#.Y26Z1wQ3Jf4.twitter

#OpenAcces chapter by @IntechOpen: Future Particle Accelerators https://www.intechopen.com/online-first/83039

 

[Philip Koeck]

I read a paper about coherent surface plasmon amplification by free electron pumping in an article a few days ago. It seems to work as some kind of free electron laser-like light source, and I wonder how high the energy of photons can go in this way. Also I read in another paper about "efficient" generation of "Extremely brilliant" and "collimated" MeV to GeV gamma rays in the plasma accelerator. I wonder if plasmonics can replace ionized gas to achieve this. There is indeed an idea of Plasmonic acceleration, right?

More information:
Creating surface plasmon polariton amplification using free-electron pumping to build a new kind of laser https://phys.org/news/2022-11-surface-plasmon-polariton-amplification-free-electron.html via @physorg_com

Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator https://www.science.org/doi/10.1126/sciadv.aaz7240#.Y26Z1wQ3Jf4.twitter

#OpenAcces chapter by @IntechOpen: Future Particle Accelerators https://www.intechopen.com/online-first/83039

Plasmons on metal surfaces, as far as I know, usually have energies in the range of 10 to 100 eV. That's more like visible light.

 

[nightvidcole]

The plasma frequency of metals is in the UV, not in the gamma ray range. GeV electrons can only produce incoherent bremsstrahlung.