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Three-dimensional chiral photonic superlattices

Three-dimensional chiral photonic superlattices
Author: M. Thiel, H. Fischer, G. von Freymann, and M. Wegener links:
Source: Opt. Lett. 35, 166 (2010)
Date: 13.1.2010


We investigate three-dimensional photonic superlattices composed of polymeric helices in various spatial checkerboard-like arrangements. Depending on the relative phase shift and handedness of the chiral building blocks, different circular-dichroism resonances appear or are suppressed. Samples corresponding to four different configurations are fabricated by direct laser writing. The measured optical transmittance spectra are in good agreement with numerical calculations.