High detectivity short-wavelength II-VI quantum cascade detector

Arvind P. Ravikumar; Thor A. Garcia; Joel De Jesus; Maria C. Tamargo; Claire F. Gmachl

doi:10.1063/1.4893359

High detectivity short-wavelength II-VI quantum cascade detector

Arvind P. Ravikumar, Thor A. Garcia, Joel De Jesus, Maria C. Tamargo, Claire F. Gmachl

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28 Scopus citations

Abstract

We report on the experimental demonstration of a ZnCdSe/ZnCdMgSe-based short-wavelength photovoltaic Quantum Cascade Detector (QCD). The QCD operates in two spectral bands centered around 2.6μm and 3.6μm. Calibrated blackbody measurements yield a peak responsivity of 0.1mA/W or 2400V/W at 80K, and a corresponding 300K background radiation limited infrared performance detectivity (BLIP) of ∼2.5×10¹⁰cm Hz/W. Comparison of background illuminated and dark current-voltage measurements demonstrates a BLIP temperature of 200K. The device differential resistance-area product, decreases from about 10⁶ Ω cm² at 80K to about 8000 Ω cm² at 300K, indicative of the ultra-low Johnson noise in the detectors.

Original language	English (US)
Article number	061113
Journal	Applied Physics Letters
Volume	105
Issue number	6
DOIs	https://doi.org/10.1063/1.4893359
State	Published - Aug 11 2014

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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title = "High detectivity short-wavelength II-VI quantum cascade detector",

abstract = "We report on the experimental demonstration of a ZnCdSe/ZnCdMgSe-based short-wavelength photovoltaic Quantum Cascade Detector (QCD). The QCD operates in two spectral bands centered around 2.6μm and 3.6μm. Calibrated blackbody measurements yield a peak responsivity of 0.1mA/W or 2400V/W at 80K, and a corresponding 300K background radiation limited infrared performance detectivity (BLIP) of ∼2.5×1010cm Hz/W. Comparison of background illuminated and dark current-voltage measurements demonstrates a BLIP temperature of 200K. The device differential resistance-area product, decreases from about 106 Ω cm2 at 80K to about 8000 Ω cm2 at 300K, indicative of the ultra-low Johnson noise in the detectors.",

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T1 - High detectivity short-wavelength II-VI quantum cascade detector

AU - Ravikumar, Arvind P.

AU - Garcia, Thor A.

AU - Jesus, Joel De

AU - Tamargo, Maria C.

AU - Gmachl, Claire F.

PY - 2014/8/11

Y1 - 2014/8/11

N2 - We report on the experimental demonstration of a ZnCdSe/ZnCdMgSe-based short-wavelength photovoltaic Quantum Cascade Detector (QCD). The QCD operates in two spectral bands centered around 2.6μm and 3.6μm. Calibrated blackbody measurements yield a peak responsivity of 0.1mA/W or 2400V/W at 80K, and a corresponding 300K background radiation limited infrared performance detectivity (BLIP) of ∼2.5×1010cm Hz/W. Comparison of background illuminated and dark current-voltage measurements demonstrates a BLIP temperature of 200K. The device differential resistance-area product, decreases from about 106 Ω cm2 at 80K to about 8000 Ω cm2 at 300K, indicative of the ultra-low Johnson noise in the detectors.

AB - We report on the experimental demonstration of a ZnCdSe/ZnCdMgSe-based short-wavelength photovoltaic Quantum Cascade Detector (QCD). The QCD operates in two spectral bands centered around 2.6μm and 3.6μm. Calibrated blackbody measurements yield a peak responsivity of 0.1mA/W or 2400V/W at 80K, and a corresponding 300K background radiation limited infrared performance detectivity (BLIP) of ∼2.5×1010cm Hz/W. Comparison of background illuminated and dark current-voltage measurements demonstrates a BLIP temperature of 200K. The device differential resistance-area product, decreases from about 106 Ω cm2 at 80K to about 8000 Ω cm2 at 300K, indicative of the ultra-low Johnson noise in the detectors.

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High detectivity short-wavelength II-VI quantum cascade detector

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