High-speed, room-temperature quantum cascade detectors at 4.3 μm | Zendy

Yuhong Zhou | Zendy; Shenqiang Zhai | Zendy; Fengjiao Wang | Zendy; Junqi Liu | Zendy; Fengqi Liu | Zendy; Shuman Liu | Zendy; Jinchuan Zhang | Zendy; Ning Zhuo | Zendy; Lijun Wang | Zendy; Zhanguo Wang | Zendy

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High-speed, room-temperature quantum cascade detectors at 4.3 μm

Author(s) -

Yuhong Zhou,

Shenqiang Zhai,

Fengjiao Wang,

Junqi Liu,

Fengqi Liu,

Shuman Liu,

Jinchuan Zhang,

Ning Zhuo,

Lijun Wang,

Zhanguo Wang

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4943675

Subject(s) - cutoff frequency , cascade , microwave , parasitic extraction , detector , optoelectronics , cutoff , rlc circuit , physics , materials science , optics , capacitor , engineering , voltage , quantum mechanics , chemical engineering

We present high-speed, room-temperature operated 4.3 μm quantum cascade detectors. The devices are processed as square mesas with 50 Ω coplanar access line and air-bridge connector. The high frequency features are explored using microwave rectification technique and a RLC circuit model. The -3 dB cutoff frequency is experimentally 9 GHz and 4 GHz for 20×20 μm2 and 50×50 μm2 detectors, respectively. The equivalent circuit analysis shows that a second order filter feature governs the devices. Higher cutoff frequency can be achieved by eliminate the parasitics further

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