Multipolar Effects in the Optical Active Second Harmonic Generation from Sawtooth Chiral Metamaterials.

ABSTRACT: Based on the facts that chiral molecules response differently to left- and right-handed circular polarized light, chiroptical effects are widely employed for determining structure chirality, detecting enantiomeric excess, or controlling chemical reactions of molecules. Compared to those in natural materials, chiroptical behaviors can be significantly amplified in chiral plasmonic metamaterials due to the concentrated local fields in the structure. The on-going research towards giant chiroptical effects in metamaterial generally focus on optimizing the field-enhancement effects. However, the observed chiroptical effects in metamaterials rely on more complicated factors and various possibilities towards giant chiroptical effects remains unexplored. Here we study the optical-active second har

SUBMITTER: Su H 

PROVIDER: S-EPMC4766511 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature