手性薄膜表面二次谐波圆二向色性的研究  

Study on Surface Second Harmonic Generation-Circular Dichroism of Chiral Molecular Films

作　　者：辛丽[1] 李淳飞[1] 李俊庆[1] 郑仰东[1] 

机构地区：[1]哈尔滨工业大学应用物理系,哈尔滨150001

出　　处：《光学学报》2001年第9期1055-1058,共4页Acta Optica Sinica

基　　金：哈尔滨工业大学校内基金资助课题

摘　　要：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 。The formula of the intensity on the reflected direction of second harmonic generation-circular dichroism (SHG-CD) was presented. The relationship between the intensity of surface SHG-CD and structural parameters such as pitch, radius and azimuthal angle of molecules in helix molecular films was analyzed, and the numerical simulation results were given. It was found that in the value range of pitch or radius, there exists the maximal intensity of SHG-CD respectively, while the relation between pitch and radius is different with respect to the varying azimuthal angle of molecules.

关 键 词：二次谐波 圆二向色性 螺旋型手性分子 薄膜表面 谐波强度 数值模拟 

分 类 号：O484.41[理学—固体物理] O485[理学—物理]