テラヘルツ波制御フォトニック結晶の自由造形

抄録

Photonic crystal is known as a new functional material with the periodic structure of dielectric media which can form the photonic band gap due to Bragg diffraction and thereby totally reflect electromagnetic waves. Various applications are expected for photonic crystals in communication, information and optical devices. We have tried to fabricate photonic crystals for control electromagnetic waves in THz region. The THz waves can be applied to the next generation communication with high speed and large contents, sensors of surface defects of materials, skin cancer, bacteria in foods, and others. The photonic crystal consisting of epoxy resin including TiO₂-SiO₂ nano-composite particles with the diamond structure was successfully fabricated by using a CAD/CAM freeforming process of stereolithography. The crystal consists of 1000 unit cells with the lattice constant of 1mm. The diamond photonic crystal showed the band gap in THz range.