2010 Fiscal Year Final Research Report
Research on Opto-Spintronic Functional Devices
| Project Area | Creation and control of spin current |
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| Project/Area Number |
19048017
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
SHIMIZU Hiromasa 東京農工大学, 大学院・工学研究院, 特任准教授 (50345170)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKANO Yoshiaki 東京大学, 先端科学技術研究センター, 教授 (50183885)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 強磁性金属 / 光アイソレータ / 磁気光学効果 |
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| Research Abstract |
We have done research on novel magneto-optic materials and amplifying optical isolators, based on conventional semiconductor optical isolators. We have developed semiconductor optical isolators using epitaxial ferromagnetic metal MnSb and realized an extinction ratio of 12.3 dB/mm and optical isolator operation at 70 ℃. Magneto-optic figure of merit of novel magneto-optic materials (TiO 2 :Co and PrCoB) was investigated. Furthermore, we have realized amplifying semiconductor optical isolators. These research results are useful for optical isolators integrated with semiconductor lasers and their application to optical information signal processing.
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