| Project/Area Number |
20340080
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
SAKODA Kazuaki National Institute for Materials Science, 量子ドットセンター, センター長 (90250513)
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| Research Collaborator |
KURODA Takashi 独立行政法人物質・材料研究機構, 量子ドットセンター, 主幹研究員 (00272659)
MANO Takaaki 独立行政法人物質・材料研究機構, 量子ドットセンター, 主任研究員 (60391215)
SUGIMOTO Yoshimasa 独立行政法人物質・材料研究機構, 量子ドットセンター, 主席研究員 (60415784)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2010: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2009: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2008: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
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| Keywords | GaAs / 量子リング / 量子ドット / フォトニック結晶 / QED |
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| Research Abstract |
To give a definite experimental proof of the cavity QED (quantum electrodynamics) effect of GaAs nano particles, we performed self-assembly of nano particles, fabrication of photonic crystal microcavities, characterization by micro spectroscopy, theoretical analysis of electronic states and electromagnetic modes, and studies on relevant applications. We proved the Purcell effect, or acceleration of photon emission, for GaAs nano particles embedded in photonic crystal microcavities with lattice constants around 200 nm. We also achieved high crystal quality by improvement of the self-assembling technique, so we succeeded for the first time in lasing by current injection with GaAs nano particles. In addition, we clearly demonstrated doubly enhanced spontaneous emission due to the small group velocity of photon at photonic band edges.
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