INCREASING THE RESISTANCE OF CRYSTALS TO OPTICAL DAMAGE

摘要

The invention relates to a method for desensitising a crystal exhibiting non - linear optical properties, in particular a lithium niobate or lithium tantalate crystal against damage of exposure to light action ( optical damag es ). The similar type damages are caused by refraction index modifications induced by light. The dark conductivity of the crystal is increased by dopin g with extrinsic ions.