We review our recent work on three-dimensional chiral photonic crystals. High-quality polymeric three-dimensional spiral and layer-by-layer photonic crystals are fabricated via direct laser writing. Polarization stop bands for circularly polarized light are observed, leading up to a suppression of a factor 52 for one circular polarization with respect to the other. The transmittance for the passing polarization is as high as 95 % . These chiral elements are sandwiched between one-dimensional lamellae structures acting as quarterwave plates to form thin-film polarizers, which can be operated under perpendicular incidence.

Date Published: 6 February 2008
PDF: 6 pages
Proc. SPIE 6883, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics, 68830K (6 February 2008); doi: 10.1117/12.762575

Published in SPIE Proceedings Vol. 6883:
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics
Thomas J. Suleski; Winston V. Schoenfeld; Jian Jim Wang, Editor(s)