| Project/Area Number |
15K04698
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | The University of Shiga Prefecture |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | ゾル-ゲル法 / インプリント法 / ワイヤグリッド偏光子 / ゾル－ゲル法 / ゾル‐ゲル法 / インプリント加工 |
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| Outline of Final Research Achievements |
An infrared wire-grid polarizer consisting of an Al grating and a sol-gel-derived zirconia grating film was fabricated by imprinting using a silicone mold, a sol-gel method, and Al shadow coating processes. The Al grating with a pitch of 400 nm and a thickness of around 100 nm was successfully obtained on the zirconia grating film. The fabricated polarizer exhibited a polarization function with a TM transmittance greater than that of the Si substrate in the 4.2 ～ 5.3 um wavelength range, because the zirconia film acted as an antireflection film, and an extinction ratio of more than 20 dB in the 2.5 ～ 7.8 um wavelength range. The experiment verified that imprinting onto a sol is very effective for the low-cost fabrication of infrared polarizers.
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