非线性光学材料是激光技术的重要物质基础之一,是高技术研究的一个组成部分。二十多年来,非线性光学材料的研究经历了无机晶体、有机材料的阶段,现在又开始了金属有机非线性光学材料的探索。本文拟综述有机和金属有机二阶非线性光学晶体材料的研究进展,而不讨论高分子材料以及三阶非线性光学效应。鉴于刊物读者的特 Nonlinear optical materials are one of the important material bases of laser technology and are an integral part of high technology research. For more than two decades, the study of nonlinear optical materials has gone through the stages of inorganic crystals and organic materials. Now we have started the exploration of metal-organic nonlinear optical materials. This paper reviews the progress of organic and metal organic second-order nonlinear optical crystal materials, without discussing polymeric materials and third-order nonlinear optical effects. Given the special readership publications