In one embodiment this invention provides a nonlinear optical medium which consists of a transparent solid substrate coated with a Langmuir-Blodgett deposition of at least one molecular monolayer, of uniaxial aligned charge asymmetric quinodimethane molecules, such as 7,7-bis(hexadecylaminol-8,8-dicyanoquinodimethane:
在一个实施方案中,本发明提供了一种非线性光学介质,它由涂有至少一个分子单层的透明固体基板组成,这些分子单层是单轴排列的电荷不对称醌二
甲烷分子,如 7,7-双(
十六烷基
氨基醇-8,8-二
氰基醌二
甲烷):