title: Nonlinear imaging and spectroscopy of chiral metamaterials.
abstract: A chiral metamaterial produces both distinguishable linear and non-linear resonant features when probed with left and right circularly polarized light. The material demonstrates a linear transmission contrast of 0.5 between left and right circular polarizations and a 20× contrast between second-harmonic responses from the two incident polarizations. Non-linear and linear response images probed with circularly polarized light show strongly defined contrast.
authors.affiliation: School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
authors.forename: Sean P
authors.initials: SP
authors.lastname: Rodrigues
authors.forename: Shoufeng
authors.initials: S
authors.lastname: Lan
authors.forename: Lei
authors.initials: L
authors.lastname: Kang
authors.forename: Yonghao
authors.initials: Y
authors.lastname: Cui
authors.forename: Wenshan
authors.initials: W
authors.lastname: Cai
mesh_terms: D002942:Circular Dichroism; D061848:Optical Imaging; D013237:Stereoisomerism
keywords: chirality; circular dichroism; metamaterials; nonlinear optics; optical activity