Terahertz polarizer with high extinction ratios below -60 dB, transmission power above 90%, robustness, and a low-cost structure.
| Project/Area Number |
26600108
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Research Collaborator |
Kishi Yudai 茨城大学, 理工学研究科
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | テラヘルツ波帯 / 偏光子 / 金属スリット構造 / メタマテリアル / モードマッチング法 / 散乱行列 |
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| Outline of Final Research Achievements |
Measurements utilizing terahertz waves have found and observed novel physical phenomena. High-sensitivity terahertz polarizers are demanded for accurate-polarization measurements. However, conventional wire-grid polarizers cannot simultaneously realize a high extinction ratio, high transmission power, and robustness. We demonstrate a laminated-structure polarizer with a high extinction ratio, high transmission power, and robustness. The design is performed by a mode-matching method for an iterative design, taking into fabrication conditions. Measurements by terahertz time-domain spectroscopy (THz-TDS) confirm the performance of fabricate polarizers.
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Report
(4 results)
Research Products
(40 results)
