Photon-echo study of the cross-relaxation kinetics of ground states in ruby

Photon Echoes and Their Application to Relaxation Measurements in Ruby.

Reversed photon echo study of relaxation processes in ruby in a zero magnetic field

Magnetic field- and concentration-dependent photon echo relaxation in ruby with simple exponential decay

The effect of instantaneous diffusion on the relaxation of photon echoes in ruby

Relaxation of Photon Echoes in Ruby.

Level-crossing effects and spin-dependent decay of circularly polarized photon echoes in ruby