Circular dichroism in a three-dimensional semiconductor chiral photonic crystal
arXiv:1408.3941 · doi:10.1063/1.4892430
Abstract
Circular dichroism covering the telecommunication band is experimentally demonstrated in a semiconductor-based three-dimensional chiral photonic crystal (PhC). We design a rotationally-stacked woodpile PhC structure where neighboring layers are rotated by 60 degrees and three layers construct a single helical unit. The mirror-asymmetric PhC made from GaAs with sub-micron periodicity is fabricated by a micro-manipulation technique. Due to the large contrast of refractive indices between GaAs and air, the experimentally obtained circular dichroism extends over a wide wavelength range, with the transmittance of right-handed circularly polarized incident light being 85% and that of left-handed light being 15% at a wavelength of 1300 nm. The obtained results show good agreement with numerical simulations.
arXiv comment4 pages, 4 figures
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Cited by in corpus (9)
- Multi Weyl Points and the Sign Change of Their Topological Charges in Woodpile Photonic Crystals
- Observation of a charge-2 photonic Weyl point in the infrared
- Circularly polarized vacuum field in three-dimensional chiral photonic crystals probed by quantum dot emission
- Circularly polarized topological edge states derived from optical Weyl points in semiconductor-based chiral woodpile photonic crystals
- Intrinsic circularly-polarized exciton emission in a twisted van-der-Waals heterostructure
- Optical Properties of Chiral Three-Dimensional Photonic Crystals made from Semiconductors
- Terahertz chiral photonic-crystal cavities for Dirac gap engineering in graphene
- Transmission properties of microwaves at an optical Weyl point in a three-dimensional chiral photonic crystal
- Observation of Quadratic (Charge-2) Weyl Point Splitting in Near-Infrared Photonic Crystals