Abstract
Three-dimensional photonic crystals consisting of periodic arrays of spiral columns were fabricated in a commercially available photoresist (SU-8) by a direct laser writing technique. Tailoring the pre- and post-processing conditions for the photoresist has enabled the recording of extended, self-supporting periodic structures with sub-diffraction resolution. Pronounced photonic stop gaps were observed at wavelengths between 1.5 and 1.8 μm, close to the telecommunications region. These structures can be used as accurate and robust templates for subsequent infiltration by materials with higher refractive index.
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42.65.Re; 42.70.-a; 42.70.Qs
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Seet, K., Mizeikis, V., Juodkazis, S. et al. Spiral three-dimensional photonic crystals for telecommunications spectral range. Appl. Phys. A 82, 683–688 (2006). https://doi.org/10.1007/s00339-005-3459-y
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DOI: https://doi.org/10.1007/s00339-005-3459-y