Optical devices for terahertz wave band from 0.1 to 10 THz are rapidly expanding and require better designs. This paper proposes and designs a parallel plate lens with metal hole array for the terahertz wave band. The fast wave effect is due to the parallel plate. For this lens, the parallel plate spacing and hole array dimensions control the phase velocity and the focusing effect. It is not necessary to control the phase through the lens shape, which is flat, itself. The periodic analysis model extracted from the full model confirms the phase control by the metal hole array dimensions. The periodic model can be used for efficient iterative design. The full wave analysis results are also obtained by ANSYS HFSS and the focusing effect is confirmed. Phase control using both the parallel plate and the hole array enhances the focusing effect over the focusing effect controlled only by the metal hole array dimensions.
|Number of pages
|Applied Physics A: Materials Science and Processing
|Published - May 2014
Bibliographical noteFunding Information:
The authors would like to thank Mr. Yudai Kishi, Mr. Yuki Takebayashi, and Mr. Katsunari Irie for their kind support in completing this paper. This research was partially supported by a Grant-in-Aid for Scientific Research on Innovative Areas “Electromagnetic Metamaterial” (No. 23109505) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan, the Strategic Information and Communications R&D Promotion Programme (SCOPE) (No. 122103011) from the Ministry of Internal Affairs and Communications, Accelerating Utilization of University IP Program (No. 439) from Japan Science and Technology Agency (JST), Program for Revitalization Promotion (No. 241FT0462) from Japan Science and Technology Agency (JST), the Takayanagi Memorial Foundation, the Yazaki Memorial Foundation for Science & Technology, the Iketani Science and Technology Foundation, and Futaba Electronics Memorial Foundation.
ASJC Scopus subject areas
- Chemistry (all)
- Materials Science (all)