An Interference Experiment with Two Independent Beams of Ruby Maser Light

Interference Fringes Produced by Superposition of Two Independent Maser Light Beams

Temporal Coherence Between Superposed Light Beams from Two Ruby Optical Masers

Coherence Time Measurements of Light from Ruby Optical Masers

The pulsed ruby maser as a light amplifier

Simultaneous Optical Maser Action in Two Ruby Satellite Lines

Stimulation versus Emission in Ruby Optical Maser