INFLUENCE OF THE GAMMA-RADIATION ON THE GENERATION CHARACTERISTICS OFTHE YALO3-ND CRYSTALS

The results of investigation of the influence of gamma-radiation by Co -60-source on the YAlO3:Nd laser generation characteristics are presen ted in this paper. The significant decrease in the output energy after gamma-irradiation was obtained. The energetic characteristics are res tored after illumination of the gamma-irradiated laser rods by 1000-10 000 pulses of the pumping lamp light. The additional absorption spectr um is induced by gamma-irradiation in the crystals. The nature of the created in this way colour centres is discussed. The mechanism of infl uence of the colour centres on generation properties of the crystals i s discussed.