Abstract

Organic single crystals with conjugated charge transfer molecular units of the paranitroaniline type exhibit quadratic nonlinear efficiency(~d²n⁻³) up to two orders of magnitude above LiNbO₃ and higher damage threshold in bulk phase-matched configurations for "optimized"(l) crystalline structures. Such optimization is exemplified in the case of the chiral hydrogen-bonded monoclinic (P2₁) N-(4-Nitrophenyl)-(L)-Prolinol crystal ("NPP")(2) (Fig. l)

© 1984 Optical Society of America