Stimulated emission of phonons in a ruby fiber
Peter A. Fokker, W. D. Koster, J. I. Dijkhuis +4 more
Avalanches of resonant phonons generated by stimulated emission within the optically excited $\ifmmode \bar{E}\else \={E}\fi{}{(}^{2}E)$ doublet are observed in a 400-$\ensuremath{\mu}$m thick fiber of single-crystalline ruby. In comparison with bulk ruby, the avalanches develop fully in a shorter time because the phonons are confined to the active medium by reflection from the fiber boundaries. Position-independent rate equations adequately describe the dynamics.
Physical review. B, Condensed matter•Aug 1, 1997•5 citations