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Research
- Electromagnetic Metamaterial Lens for Teraherz Wave Band
Research Topics
Optical devices for the terahertz wave band ranging from 0.1 to
10 THz are now being developed and require better designs. It is
not easy to arbitrarily realize a desired refractive index n using
naturally-occurring materials. When materials are directly used
for optical devices, the material properties themselves determine
the optical characteristics. Typical lenses for the terahertz wave
band are made of high density polymer, Tsurupica, and silicon with
refractive indices of 1.52, 1.56, and 3.41, respectively. Lenses
composed of electromagnetic metamaterials, sphere arrays, disk arrays,
square plate arrays,and strip arrays, have been proposed for microwave
frequency band. The works in [2], [4], [6], [9] proposes an artificial
dielectric lens with metallic corrugated structures for the terahertz
wave band. The fabrication of terahertz electromagnetic metamaterials
by metallic processing and semiconductor etching is relatively easy
compared with fabrication of metamaterials in the optical range
since the dimensions of the unit element are on the order of microns.
It is significant that the unit cell of the electromagnetic metamaterial
controls the refractive index with respect to design flexibility
and cost performance.
1 . Takehito Suzuki, Tomonari Suzuki, John C. Young, Keisuke Takano,
Hideaki Kitahara, and Masanori Hangyo, "Analysis of Artificial
Dielectric Lens with Metallic Rectangular Chips for Terahertz Wave
Band," Applied Phyaics A, Vol. 109, No. 4, pp.825-830, Nov.
2012.
2. Takuya Konno, Takahiro Suzuki, John C. Young Mikio Saigusa, Keisuke
Takano, Hideaki Kitahara, Masanori Hangyo, and Takehito Suzuki,
"Proposal and Analysis of@ Artificial Dielectric Lens with
Metallic Corrugated Structures for Terahertz Wave Band," Applied
Phyaics A, Vol. 109, No. 4, pp.825-830, Nov. 2012.
3 . Hiroki Yonamine, Yudai Kishi, Takuya Konno, Keisuke Takano,
Masanori Hangyo, Takehito Suzuki, "Analysis of Concave Lens
with Metallic Slit Array for Terahertz Wave Band," The 73th
Autum Meeting, 2012; The Japan Society of Applied Physics and Related
Societies, 11p-B1-6, Ehime University & Matsuyama University,
Sep., 2012.
4 . Takuya Konno, Mikio Saigusa, Mamoru Mita, Syouichi Furusawa,
John C. Young, Keisuke Takano, Hideaki Kitahara, Masanori Hangyo,
Takehito Suzuki, "Analysis of Flat Lens with Metallic Corrugated
Structures and Metallic Slit Array for Terahertz Wave Band ,"
The 73th Autum Meeting, 2012; The Japan Society of Applied Physics
and Related Societies, 11p-B1-5, Ehime University & Matsuyama
University, Sep. 2012.
5 . Yudai Kishi, Keisuke Takano, Masanori Hangyo, Hiroki Yonamine,
Takuya Konno, Takehito Suzuki, "Analysis of Design Model with
Periodic Boundary Walls for Metal Slit Array with Split Ring Resonators
in Cutoff Frequency ," The 73th Autum Meeting, 2012; The Japan
Society of Applied Physics and Related Societies, 11p-B1-1, Ehime
University & Matsuyama University, Sep. 2012.
6 . Takuya Konno, Takahiro Suzuki, John C. Young, Mikio Saigusa,
Keisuke Takano, Hideaki Kitahara, Masanori Hangyo, and Takehito
Suzuki, "Proposal and Analysis of Artificial Dielectric Lens
with Metallic Corrugated Structures for Terahertz Wave Band,"
META 2012 3rd International Conference on Metamaterials, Photonic
Crystals and Plasmonics, Paris, France, Apr. 2012.
7 . Takehito Suzuki, Tomonari Suzuki, John C. Young, Keisuke Takano,
Hideaki Kitahara, and Masanori Hangyo, "Analysis of Artificial
Dielectric Lens with Metallic Rectangular Chips for Terahertz Wave
Band ," META 2012 3rd International Conference on Metamaterials,
Photonic Crystals and Plasmonics, Paris, France, Apr. 2012.
8. Tomonari Suzuki, John
C. Young, Keisuke Takano, Hideaki Kitahara, Masanori Hangyo, Takehito
Suzuki, "Control on the Focal Length of Artificial Dielectric
Lens with Metal Rectangular Chips for Terahertz Wave Band ,"
The 59th Spring Meeting, 2012; The Japan Society of Applied Physics
and Related Societies, 17a-E8-11, Waseda University, Mar., 2012.
9. Takehito Suzuki, Takuya Konno, John C. Young, Keisuke Takano,
Hideaki Kitahara, Masanori Hangyo, "Proposal and Focal Length
Control of Artificial Dielectric Lens with Metallic Corrugated Structures
for Terahertz Wave Band ," The 59th Spring Meeting, 2012; The
Japan Society of Applied Physics and Related Societies, 17a-E8-10,
Waseda University, Mar., 2012.
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