| Project/Area Number |
20540393
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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 |
Atomic/Molecular/Quantum electronics
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| Research Institution | National Institute of Information and Communications Technology |
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Principal Investigator |
AKIBA Makoto National Institute of Information and Communications Technology, 新世代ネットワークセンター量子ICTグループ, 主任研究員 (80184109)
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| Co-Investigator(Renkei-kenkyūsha) |
SAWADA Kazuaki 豊橋技術科学大学, 工学部, 教授 (40235461)
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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 |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | アバランシェフォトダイオード / 光子検出 / 高光検出効率 / 低暗計数 / 超高感度 / 低雑音読み出し技術 / 低雑音読み出し回路 / 出力電子数分布 |
|---|
| Research Abstract |
To develop a photon counter with low dark count rate and high photodetection efficiency, we have fabricated several kinds of avalanche photodiodes (APDs) with an additional linear multiplication layer and a temperature-controllable and low-noise measurement system to measure the characteristics of the APDs. Consequently, it was found that dark count rate of less than 0.1 cps is possible by using pin junction Al_<0.9>Ga_<0.1>As/GaAs APDs. On the other hand, with regard to the photodetection efficiency of the APDs, the efficiency of more than 90% has not been confirmed.
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