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We theoretically and experimentally investigated the fabrication conditions for THz photonic crystals. A THz photonic crystal with complete band gap from 0.33 THz to 0.36 THz has been designed. The substrate is polytetrafluorethylene (PTFE) which is transparent in THz range. The lattice constant is 320 ??m, the hole radius is 85??m. An excimer laser with wavelength 248nm is used to realize the structure...
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