| A 10.7 μm InGaAs/InAlAs Quantum Cascade Detector |
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| 作者姓名： | 孔宁 刘俊岐 李路 刘峰奇 王利军 王占国 陆卫 |
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| 基金项目： | Supported by the National Science Fund for Distinguished Young Scholars of China under Grant No 60525406, the National Natural Science Foundation of China under Grant Nos 60736031, 60806018, 60906026 and 10990100, the National Basic Research Program of China under Grant No 2006CB604903, and the National High-tech R＆D Program of China under Grant Nos 2007AA03Z446 and 2009AA03Z403. |
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| 摘 要： | A 10.7μm quantum cascade detector based on lattice matched InGaAs/InAlAs/InP is demonstrated and characterized in terms of responsivity, resistivity and detectivity. The device operates in the 8 14μm atmospheric window up to 140 K and shows a peak reponsivity of 14.4mA/W at 78K. With a resistance-area product value of 159Ωcm^2, the Johnson noise limited detectivity D^＊J is 2.8 × 10^9 Jones （cmHz^1/2W^-1） at 78K.
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| 关 键 词： | InGaAs InAlAs 量子级联 探测器 晶格匹配 大气窗口 噪声限制 InP |
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