| Project/Area Number |
22560003
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ISSHIKI Hideo 電気通信大学, 大学院・情報理工学研究科, 教授 (60260212)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | シリコンフォトニクス / Erシリケート / 4f内殻遷移 / エネルギーマイグレーション / 協同アップコンバーション / 光学利得 / シリコン光増幅器 / シリコン発光素子 / エルビウムシリケート / 発光素子 / 光増幅器 / クエンチングメカニズム / 拡散律速モデル / シリコンフォトニク / 光源技術 / 光物性 / テラヘルツ/赤外材料・素子 / 光導波路 / 希土類元素 / 結晶成長 |
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| Research Abstract |
Erbium silicate (Er2SiO5) having 1.6×1022/cm3 Er density is expected as a material for optical sources and optical amplifiers operated at 1.53цm in silicon photonics. Due to short Er-Er distances, however, the energy migration limits the luminescence efficiency. We changed the Er-Er distance by using ErxY2-xSiO5 crystals and evaluated the mechanisms and magnitudes of nonradiative transitions caused by energy migration. We found that nonradiative transitions due to energy migration were almost reduced at x～0.1 (Er～1×1021/cm3). We formed an optical waveguide of 500 цm length and obtained an optical gain of 30dB/cm.
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