Concentration dependence of the intensity of luminescence in concentrated ruby

Dependence of the width and duration of the luminescence R lines of ruby on the chromium concentration

Temperature dependence of the luminescence from heavily doped ruby

Concentrational dependence of radiation-optical effects in ruby

Luminescence and Absorption of Excited Ruby

The Polarization of Luminescence of Ruby

Two-photon Excitation of Luminescence in Ruby Crystals