Harmonic distortions enhance circular dichroism of dielectric single gyroids

Hielscher J, Pouya C, Vukusic P, Schroeder-Turk GE (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Optics Express Optical Society of America

Book Volume: 25

Pages Range: 5001-5017

Journal Issue: 5

DOI: 10.1364/OE.25.005001

Abstract

The departure from strict periodic order in two-phase dielectric materials can offer properties that are otherwise inaccessible to perfectly ordered photonic crystals. Herewith, we investigate the circular dichroism of the single gyroid photonic crystal in the presence of spatial distortions. FDTD simulations and microwave transmission measurements on 3D-printed replicas show that certain harmonic long-wavelength spatial distortions (\dqsinusoidal chirp\dq) nearly doubles the imbalance of the circular polarisation reflectances, as well as significantly strengthens polarisation-incoherent reflectance. The observed changes are partially rationalised by comparison with simpler distortion models (linear chirp and tetragonal deformation) of the Gyroid.

Authors with CRIS profile

Johannes Hielscher Lehrstuhl für Theoretische Physik

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

University of Exeter GB United Kingdom (GB) Murdoch University AU Australia (AU)

How to cite

APA:

Hielscher, J., Pouya, C., Vukusic, P., & Schroeder-Turk, G.E. (2017). Harmonic distortions enhance circular dichroism of dielectric single gyroids. Optics Express, 25(5), 5001-5017. https://dx.doi.org/10.1364/OE.25.005001

MLA:

Hielscher, Johannes, et al. "Harmonic distortions enhance circular dichroism of dielectric single gyroids." Optics Express 25.5 (2017): 5001-5017.

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