手性薄膜表面二次谐波圆二向色性的研究

给出了螺旋型手性分子薄膜表面反射方向的圆二向色性的谐波强度表示式，分析了谐波的强度与手性分子的取向，分子的螺距和半径等结构参数的关系，给出了数值模拟结果，发现在入射光强一定的情况下，谐波强度在螺距和半径的取值范围内分别存在着最大值，以及螺距与半径之间满足的关系式随分子取向角的变化而不同。

Study on Surface Second Harmonic Generation-Circular Dichroismof Chiral Molecular Films

The formula of the intensity on the reflected direction of second hormonic generation circular dichroism (SHG CD) is presented. The relationship between the intensity of surface SHG CD and pitch, radius and azimuthal angle of molecules in helix molecular films are analyzed, and the numerical simulation results are given. It shows that in the value range of pitch or radius, there exists the maximal intensity of SHG CD respectively. And the relation between pitch and radius is different to the varying azimuthal angle of molecules.