Abstract: Potassium lithium niobate single crystals of 10mm in diameter and up to 45mm in length were grown by the modified Bridgman technique. The transmittance spectrum and dielectric property of as-grown crystal were measured. The wafer of as-grown KLN crystal has good transmittance from 400nm to 800nm. Dielectric constants ε₃₃ and ε₁₁) at room temperature are 127 and 376 respectively. The cleavage face and chemical inhomogeneity are the main factors of cracking.

Key words: spotassium lithium niobate crystal, Bridgman method, crystal growth, property