Role of Geometric Shape in Chiral Optics

Abstract

The distinction of chiral and mirror symmetric objects is straightforward from a geometrical point of view. Since the biological as well as the optical activity of molecules strongly depend on their handedness, chirality has recently attracted high interest in the field of nano-optics. Various aspects of associated phenomena including the influences of internal and external degrees of freedom on the optical response have been discussed. Here, we propose a constructive method to evaluate the possibility of observing any chiral response from an optical scatterer. Based on solely the T-matrix of one enantiomer, planes of minimal chiral response are located and compared to geometric mirror planes. This provides insights into the relation of geometric and optical properties and enables identifying the potential of chiral scatterers for nano-optical experiments.

References in corpus (8)

• Optical Activity of Planar Achiral Metamaterials
• Adaptive Finite Element Method for Simulation of Optical Nano Structures
• Objects of maximum electromagnetic chirality
• The optical theorem for the conservation of the electromagnetic helicity: Its significance for molecular transfer and enantiomeric discrimination by dichroism
• Chiroptical response of a single plasmonic nanohelix
• Decomposition of scattered electromagnetic fields into vector spherical wave functions on surfaces with general shapes
• Optical Chirality of Time-Harmonic Wavefields for Classification of Scatterers
• Global optimization of complex optical structures using Baysian optimization based on Gaussian processes

Cited by in corpus (3)

• Kelvin's Chirality of Optical Beams
• Quantification of the helical morphology of chiral Au nanorods
• Towards maximally electromagnetically chiral scatterers at optical frequencies