Potassium lithium niobate crystals have been grown by the resistance heating Czochralski technique. The optical transmission spectrum of the crystal has been determined. The results showed that the spectrum properties of potassium lithium niobate crystals grown from a melt with a higher Li_2O content are better than that of crystals grown from the melt with a lower Li_2O content. The crystals grown by this method have good quality and second harmonic generation properties. Frequency doubling results of a quasi cw-Ti: sapphire laser using crystal samples showed that potassium lithium niobate can be used to double the frequency of near infrared quasi cw-lasers in the 890 - 960 nm wavelength range.
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