3 ms·

this may interest you: "Solid-state 229 Th nuclear laser with two-photon pumping" http://web.mit.edu/pcappell/www/pubs/Xu23a.pdf http://web.mit.edu/pcappell/w

• smaddox 3y ago
  Very interesting! Two-photon pumping of traditional lasers with only 2 states would require absurd energy densities, but I guess the combination of a strong quadrupole coupling and long state decay times makes it feasible for a nuclear laser. Still not clear what it would be useful for outside of clocks, but definitely a very cool physics project, and I'm sure someone would find other uses eventually.