论文标题
非线性圆形二色性何时出现在Achiral介电纳米颗粒中？
When does nonlinear circular dichroism appear in achiral dielectric nanoparticles?
论文作者
论文摘要
有时会出现，有时不会。我们提出了一项关于具有不同对称性和非中心对称材料的单电介质纳米结构的第二次谐波信号中圆形二色性的理论研究。我们表明，这种效果不仅可以通过宏观和晶格对称性来完全鉴定，而且还可以相对取向。基于繁琐的对称性和模态分析，我们提供了一个通用且非常简单的公式，以确定是否存在二分性能，以及具有最重要情况的表。
Sometimes it appears, sometimes it does not. We present a theoretical study of circular dichroism in the second-harmonic signal of single dielectric nanostructures with different symmetries and noncentrosymmetric materials. We show that this effect is not fully identified only by macroscopic and lattice symmetries, but their relative orientation as well. Based on the cumbersome symmetry and modal analysis, we provide a general and very simple formula to determine whether the dichroism exists, and a table with the most significant cases.
