Abstract
The fabrication and terahertz wave properties of alumina microphotonic crystals with a diamond structure were investigated. Acrylic diamond structures with alumina particles' dispersion were formed using microstereolithography. Fabricated precursors were dewaxed and sintered in air. The electromagnetic wave properties were measured by terahertz time‐domain spectroscopy. A complete photonic band gap was observed from 0.40 to 0.47 THz, and showed good agreement with the simulation of a plane wave expansion method. Moreover, a localized mode was observed by introducing a plane defect between twinned diamond structures. The localized mode was analyzed using transmission line modeling simulation.
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