Some aspects of UV absorption of NLO KDP crystals

The effect of different factors on the quality of the grown potassium dihydrophosphate crystals was studied. The transmission values in the range of 200 - 400 nm were measured for crystals grown under different conditions. The range of the impurities having an effect on the absorption of the UV radiation by crystals and solutions was extended. The maximum transmission was observed for the samples grown from the solutions of the stoichiometric composition at the crystallization temperature 55 degree(s)C and growth rate of 1 mm/day.