Transient optically detected ESR in the excited state of ruby

Direct optical excitation into excited states of Cr3+ pairs in ruby

Picosecond relaxation of ruby optical absorption on excitation by electron pulses

Coherent transients observed by Stark switching in ruby having narrow optical hole burning

Electron Paramagnetic Resonance Studies of Coherent Optical Transitions in Ruby.

Stimulated emission of phonons in optically excited ruby (A)

Cross relaxations in ruby detected by optical method