Abstract
A novel woodpile lattice structure is proposed. Based on plane waveexpansion (PWE) method, the complete photonic band gaps (PBGs) of thenovel woodpile three-dimensional (3D) terahertz (THz) photonic crystal(PC) with a decreasing symmetry relative to a face-centred-tetragonal(fct) symmetry are optimized by varying some structuralparameters and the highest band gap ratio can reach 27.61%. Comparedto the traditional woodpile lattice, the novel woodpile lattice has awider range of the filling ratios to gain high quality PBGs, whichprovides greater convenience for the manufacturing process. The novelwoodpile 3D PC will be very promising for materials of THz functionalcomponents.
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