Abstract

A number of new well-engineered optically nonlinear crystals have been conceived in the last decade¹ and shown to be as or more efficient than lithium niobate in various quadratic parametric mixing schemes. Molecular units belonging to the paranitroaniline and even more transparent nitropyridine families do not satisfactorily match the stringent damage threshold requirements linked to high-power high-gain second harmonic generation (SHG) of the 1.06-μm emission line of the YAG:Nd³⁺ laser operating at the tens of nanosecond pulse duration regime.

© 1988 Optical Society of America