切断したルビーのレーザー発光状態

抄録

In a previous paper, a study was made on nineteen ruby rods concerning the relation between their nterferograms and laser emission. The study is furthered to investigate in detail how the quality of ruby affects the radiation pattern. One ruby rod, more or less devoid of homogeneity, is divided into several portions which, are examined with a Twyman interferometer about their optical properties. When subjected to laser operation, their near- and far-field radiation patterns disclosed various characteristics inherent in ruby rod, which are the inhomogeneity and its distribu. tion, presence of minute foreign particles which cause scattering, composite radiation pattern of primary and scattering' modes, primary and scattering mode radiations and their respective nature, relation between these two radiations in respect of near- and far-field patterns, and formation of interference rings in far field pattern.