Study on high efficiency multi stacked quantum dot laser with thin barrier layer
| Project/Area Number |
15K06041
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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 |
Electron device/Electronic equipment
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| Research Institution | Aichi Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
天野 建 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (10392581)
津田 紀生 愛知工業大学, 工学部, 教授 (20278229)
森 竜雄 愛知工業大学, 工学部, 教授 (40230073)
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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 |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 半導体工学 / 低次元デバイス / 化合物半導体 / 量子ドット / 半導体物性 / マイクロナノデバイス / 量子エレクトロニクス / 半導体量子ドット / 半導体光物性 / マイクロ・ナノデバイス |
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| Outline of Final Research Achievements |
A Quantum dot laser (QD laser) is expected to have a low threshold current density and high thermal stability. However, certain problems arise in that a QD laser exhibits inadequate modal gain, transverse operation mode control etc. In our previous work, we achieved 1.3 mm high density, high-uniformity QDs. And we also realized a high modal gain with 8cm-1/QD layer with current injection method. Moreover, high modal gain, we carried out of the multi stacked QD layers with thin barriers because of a introducing to quantum mechanical coupling between vertical QDs.
In our study, we carried out the optical gain of multi-stacked QDs different barrier layers using a variable stripe length (VSL) method.We proposed the double thin multi-stacked structure that it has two features with the keeping high crystal quality and strong quantum mechanical interaction. We observed from VSL method that the double thin multi-stack structure is the highest optical gain than that conventional structure.
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Report
(4 results)
Research Products
(31 results)
