Optics and Photonics Society of Iran

This research studies optical properties of two-dimension photon crystal formed by porous metal rods in Tera-hertz wavelength region using boundary elements numerical method. Element used in this studies is copper. It is observed that using porous metal rods with nano-scale porosities instead of applying simple metal rods, optical properties of photon crystal can be completely controlled and improved. As quality coefficient in resonators of photon crystal nodes is an important measure to choose accelerator and it is operational to use it in several fields and researchers are looking for some solutions to increase it. In this paper quality coefficient is increased ten times by changing porosity percentage and a proper designing. Producing porosity in (changing filling coefficient) in completely formed crystal by porous metal rods, position and width of frequency forbidden are replaced and controlled. In addition, it is showed that resonating wavelength in resonator of photon crystal can be easily replaced and controlled by changing porosity percentage. Using boundary elements method causes to increase speed and accuracy of calculations.