Coherence Time Measurements of Light from Ruby Optical Masers

Temporal Coherence Between Superposed Light Beams from Two Ruby Optical Masers

An Interference Experiment with Two Independent Beams of Ruby Maser Light

Observation of Optical Maser Oscillation in Ruby

The pulsed ruby maser as a light amplifier

The Polarization of the Output from a Ruby Optical Maser

Beats and Modulation in Optical Ruby-Masers