Optical activity of anisotropic achiral surfaces
Optical activity of anisotropic achiral surfaces
复制标题
DOI：
10.1103/physrevlett.77.1456
复制
发表时间：
1996-08-19
影响因子：
8.6
通讯作者：
Persoons, A
中科院分区：
文献类型：
--
作者：
Verbiest, T;Kauranen, M;Persoons, A
各向异性非手性表面对左旋和右旋圆偏振光的响应不同。当表面相对于其他非手性实验装置的取向使总几何形状手性时，就会发生这种情况。这种光学活性在各向异性薄分子膜的二次谐波产生中得到了证明。当几何形状的旋向反转时，圆差响应反转符号，并且当设置具有镜像平面时，圆差响应消失。结果解释内的电偶极子允许的二阶表面非线性。
Anisotropic achiral surfaces respond differently to left- and right-hand circularly polarized light. This occurs when the orientation of the surface with respect to an otherwise achiral experimental setup makes the total geometry chiral. Such optical activity is demonstrated in second-harmonic generation from an anisotropic thin molecular film. The circular-difference response reverses sign as the handedness of the geometry is reversed and vanishes when the setup possesses a mirror plane. The results are explained within the electric-dipole-allowed second-order surface nonlinearity.