Single crystal growth and characterization of Rb0.3K0.7TiOPO4 are repo
rted. After improving the technological procedures of crystal growth,
high-quality large single crystals were obtained. The refractive indic
es, pyroelectric coefficient, dielectric, piezoelectric, elastic, ther
moelastic and elastooptic constants, SHG efficiency and damage thresho
ld were measured.