The authors discuss the generation of optical harmonics using pulsed ruby optical masers, which produce intense monochromatic light beams. They focus on the production of the second harmonic (at 3472 Å) by focusing an intense 6943 Å beam through crystalline quartz. The feasibility of this process is based on the nonlinear dielectric properties of materials like quartz and glass, which can generate harmonics when subjected to high electric fields. The paper presents the theoretical analysis and experimental results, showing that the second harmonic can be observed with high intensity. The authors also discuss the conditions under which the second harmonic is absent or dependent on polarization and orientation. The experimental setup involves a ruby optical maser, a red filter, and a quartz prism spectrometer, and the results are confirmed by photographic evidence. The study suggests that similar techniques could be applied to isotropic materials like glass with strong bias fields.The authors discuss the generation of optical harmonics using pulsed ruby optical masers, which produce intense monochromatic light beams. They focus on the production of the second harmonic (at 3472 Å) by focusing an intense 6943 Å beam through crystalline quartz. The feasibility of this process is based on the nonlinear dielectric properties of materials like quartz and glass, which can generate harmonics when subjected to high electric fields. The paper presents the theoretical analysis and experimental results, showing that the second harmonic can be observed with high intensity. The authors also discuss the conditions under which the second harmonic is absent or dependent on polarization and orientation. The experimental setup involves a ruby optical maser, a red filter, and a quartz prism spectrometer, and the results are confirmed by photographic evidence. The study suggests that similar techniques could be applied to isotropic materials like glass with strong bias fields.