High performance, room temperature, broadband II-VI quantum cascade detector
High performance, room temperature, broadband II-VI quantum cascade detector
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DOI：
10.1063/1.4932538
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发表时间：
2015-10-05
影响因子：
4
通讯作者：
Gmachl, Claire F.
中科院分区：
文献类型：
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作者：
Ravikumar, Arvind P.;De Jesus, Joel;Gmachl, Claire F.
我们报告的实验演示的室温下，II-VI，ZnCdSe/ZnCdMgSe，宽带量子级联探测器。该探测器由30个周期的2个交错的主动吸收区，中心波长分别为4.8 μ m和5.8 μ m。在3.3 μ m和6 μ m之间的宽而平滑的光电流谱，在基线以上10%处测量的宽度为1030 cm（-1），得到了高达280 K，对应于47%的Δ E/E。校准的黑体响应度测量表明，在80 K时测得的峰值响应度为40 mA/W。对应于约3.1 × 10（10）cm-1根Hz/W的探测率。偏置依赖的光电流测量显示光谱形状没有显着变化，这表明不同的有源区之间的阻抗匹配的结构。(C)2015 AIP Publishing LLC.
We report on the experimental demonstration of a room temperature, II-VI, ZnCdSe/ZnCdMgSe, broadband Quantum Cascade detector. The detector consists of 30 periods of 2 interleaved active-absorption regions centered at wavelengths 4.8 mu m and 5.8 mu m, respectively. A broad and smooth photocurrent spectrum between 3.3 mu m and 6 mu m spanning a width of 1030 cm(-1) measured at 10% above baseline was obtained up to 280 K, corresponding to a Delta E/E of 47%. Calibrated blackbody responsivity measurements show a measured peak responsivity of 40 mA/W at 80K. corresponding to a detectivity of about 3.1 x 10(10) cm root Hz/W. Bias dependent photocurrent measurements revealed no significant change in the spectral shape, suggesting an impedance matched structure between the different active regions. (C) 2015 AIP Publishing LLC.