Generation mechanism of ultrashort pulsed superfluorescence from semiconductor quantum dot assembly
| Project/Area Number |
26400320
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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 |
Condensed matter physics I
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
MIYAJIMA Kensuke 東京理科大学, 理学部第一部応用物理学科, 准教授 (20397764)
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| Co-Investigator(Kenkyū-buntansha) |
石川 陽 山梨大学, 総合研究部, 准教授 (10508807)
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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 |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 超蛍光 / 励起子分子 / 量子ドット / コヒーレンス / 超短パルス / コヒーレンス現象 / 半導体量子ドット / TEM / XRD |
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| Outline of Final Research Achievements |
We focused on superfluorescence, which is a cooperative spontaneous emission from many excited two-level systems coupled coherently, and researched a generation mechanism of ultrashort pulsed superfluorescence from semiconductor quantum dot (QD) assembly. As a result, we clarified that our samples, CuCl QD assembly, exhibited generation of the superfluorescence at temperature higher compared to the other solid-state materials. This characteristic is induced from ultrafast formation of coherence among the QDs due to the short radiative spontaneous lifetime. In addition, we showed a possibility of generation of ultrashort pulses whose time width less than 1 ps by controlling the QD density.
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Report
(4 results)
Research Products
(25 results)
