We report the fabrication and characterization of woodpile photonic crystals with up to 12 layers through titania nanoparticle infiltration of a polymer template made by soft lithography. Because the complicated alignment in the conventional layer-by-layer fabrication associated with diamondlike symmetry is replaced by a simple 90° alignment, the fabricated photonic crystal has semicrystalline phase. However, the crystal performs similarly to a perfectly aligned crystal for the light propagation integrated from the surface normal to 30° at the main photonic band gap.
Semicrystalline woodpile photonic crystals without complicated alignment via soft lithography
Jae-Hwang Lee, Ping Kuang, Wai Leung, Yong-Sung Kim, Joong-Mok Park, Henry Kang, Kristen Constant, Kai-Ming Ho; Semicrystalline woodpile photonic crystals without complicated alignment via soft lithography. Appl. Phys. Lett. 10 May 2010; 96 (19): 193303. https://doi.org/10.1063/1.3425756
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