Sub-nanometer precision modification of the optical properties of three-dimensional polymer-based photonic crystals
✍ Scribed by Georg von Freymann; Timothy Y.M. Chan; Sajeev John; Vladimir Kitaev; Geoffrey A. Ozin; Markus Deubel; Martin Wegener
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 348 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1569-4410
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✦ Synopsis
We present a convenient post-fabrication technique to precisely tune the optical properties of polymer-based threedimensional photonic crystals with sub-nanometer precision. Conventional air-plasma etching is utilized to modify the filling fraction of direct laser written polymer photonic crystals beyond the wavelength-imposed limits. Tuning of the optical properties is monitored in transmission and reflection spectroscopy. A simple model for the etching process is proposed and found to be in good agreement with the experimental observations.