1964 年 33 巻 4 号 p. 264-268
Laser glass containing neodium is prepared and the stimulated emission is observed at room temperature. As the base glass, silicate glass is chosen for it gives the fluorescence of Nd3+ the best. Glass rods with 2_??_5% Nd2O3 have a low threshold value which is expected from the relation of fluorescence to neodium concentration.