Fabrication of photonic amorphous diamonds for terahertz-wave applications
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2016-05-09 |
| Journal | Applied Physics Letters |
| Authors | Yuichiro Komiyama, Hiroyuki Abé, Yasushi Kamimura, Keiichi Edagawa |
| Institutions | The University of Tokyo |
| Citations | 7 |
Abstract
Section titled âAbstractâA recently proposed photonic bandgap material, named âphotonic amorphous diamondâ (PAD), was fabricated in a terahertz regime, and its terahertz-wave propagation properties were investigated. The PAD structure was fabricated from acrylic resin mixed with alumina powder, using laser lithographic, micro-additive manufacturing technique. After fabrication, the resulting structure was dewaxed and sintered. The formation of a photonic bandgap at around 0.45 THz was demonstrated by terahertz time-domain spectroscopy. Reflecting the disordered nature of the random network structure, diffusive terahertz-wave propagation was observed in the passbands; the scattering mean-free path decreased as the frequency approached the band edge. The mean-free paths evaluated at the band edges were close to the Ioffe-Regel threshold value for wave localization.