Dependence of third-order nonlinear optical effect on refractive index in barium (Li) aluminum (Ga or Si) borate ternary glasses produced by new pulling down technique

摘要

Ternary glasses of barium (Li-substituted) aluminum (Ga- or Si-substituted) borate were solidified by new technique using conventional Floating-zone Pulling Down system. It was difficult to grow single crystalline materials in this system. However, solidification of glasses was easy. Refractive indexes of these glasses were 1.5-1.7. Third-order nonlinear optical effects, χ~((3)), were larger than that of standard SiO_2 glass at 355 nm. Despite small refractive indexes as oxide glasses, large χ~((3)) were obtained.