HgCdTe Detectors for Space and Science Imaging: General Issues and Latest Achievements

Gravrand, O.; Rothman, J.; Cervera, C.; Baier, N.; Lobre, C.; Zanatta, J. P.; Boulade, O.; Moreau, Vincent; Fièque, B.

doi:10.1007/s11664-016-4516-3

Cited by 53 publications

(15 citation statements)

References 14 publications

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“…碲镉汞(Hg 1−x Cd x Te)是一种带隙可调的三元化合物半导体材料, 通过调节x的值, 也就是调节Cd的组分, 能覆盖短波红外到甚长波红外波段(0.7-30 µm) [1,2] . 基于碲镉汞材料的大规模焦平面器件, 已经广泛应用于空间遥感, 在气象探测、航空航天应用以及军事侦测领域发挥着重要作用 [3][4][5] . 当碲镉汞材料从短波、中波拓展至长波红外波段时, 面临着一些新的问题.…”

Section: 引言unclassified

Research progress on p-type doping mechanism and low frequency noise of long wave HgCdTe devices

Xiao-Hao¹,

Xia²,

Wang³

et al. 2021

Sci. Sin.-Phys. Mech. Astron.

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Section: 引言unclassified

Research progress on p-type doping mechanism and low frequency noise of long wave HgCdTe devices

Xiao-Hao¹,

Xia²,

Wang³

et al. 2021

Sci. Sin.-Phys. Mech. Astron.

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“…However, currently, neither of the available detector technologies in the 1550 nm region is attractive for use in a CubeSat: Both Indium-Gallium-Arsenide (IGA) APDs as well as detectors based on Mercury-Cadmium-Telluride (MCT) technology require cooling to very low temperatures (< -80 °C). In addition, IGA APDs have a rather low photon detection efficiency (PDE) < 25%, whereas MCT SPDs are still in development and appear to be hampered by large DCR [35,36]. At the current state of technology, only Silicon-based Avalanche Photo Diodes (Si-APDs) in the 800 nm range are able to combine a sufficiently high PDE and low jitter with a low DCR.…”

Section: Single Photon Detectorsmentioning

confidence: 99%

Nanobob: a cubesat mission concept for quantum communication experiments in an uplink configuration

Kerstel

Bourdarot

LeCoarer

et al. 2019

International Conference on Space Optics — ICSO 2018

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We present a ground-to-space quantum key distribution (QKD) mission concept and the accompanying feasibility study for the development of the low earth orbit CubeSat payload. The quantum information is carried by single photons with the binary codes represented by polarization states of the photons. Distribution of entangled photons between the ground and the satellite can be used to certify the quantum nature of the link: a guarantee that no eavesdropping can take place. By placing the entangled photon source on the ground, the space segments contains "only" the less complex detection system, enabling its implementation in a compact enclosure, compatible with the 12U CubeSat standard (12 dm 3 ). This reduces the overall cost of the project, making it an ideal choice as a pathfinder for future European quantum communication satellite missions. The space segment is also more versatile than one that contains the source since it is compatible with a multiple of QKD protocols (not restricted to entangled photon schemes) and can be used in quantum physics experiments, such as the investigation of entanglement decoherence. Other possible experiments include atmospheric transmission/turbulence characterization, dark area mapping, fine pointing and tracking, and accurate clock synchronization; all crucial for future global scale quantum communication efforts.

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“…However, for high flux applications, e.g., earth observation with relative large number of photons, T2SL detectors offer excellent properties. A comparison with state-of-the-art HgCdTe detectors [10][11] , specially designed for astronomical applications, where low dark currents are required, is shown in Fig. 6.…”

Section: Dark Current Measurementsmentioning

confidence: 99%

“…Dark current density of T2SL structures as a function of the inverse temperature and inverse cut-off wavelength in comparison with published HgCdTe data[10][11] .…”

mentioning

confidence: 95%

Type-II superlattices: a promising material for space applications

Daumer

Rutz

Wörl

et al. 2019

International Conference on Space Optics — ICSO 2018

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Type-II superlattices (T2SLs) are currently recognized as the sole material system offering comparable performance to HgCdTe, yet providing higher operability, stability over time, spatial uniformity, scalability to larger formats, producibility and affordability. Hence, T2SL technology is very promising for space applications. Fraunhofer IAF played a vital role in the development of III-As/Sb T2SLs right from the beginning. Mono-and bi-spectral focal plane arrays up to 640×512 pixels for the mid-and long-wavelength infrared (IR) have been demonstrated. The growth of T2SL is performed by molecular beam epitaxy (MBE) in multi-wafer reactors. We report on the excellent homogeneity and reproducibility of the growth process, established in the past years at Fraunhofer IAF. After processing this material to detector arrays, the T2SL detectors have been characterized down to low temperatures (below 40K) with promising properties regarding the dark current. For MWIR and LWIR detectors the resolution limit of the measurement setup with a dark current density of 2×10 -10 A/cm² has been reached at 77 K and 36 K, respectively.

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HgCdTe Detectors for Space and Science Imaging: General Issues and Latest Achievements

Cited by 53 publications

References 14 publications

Research progress on p-type doping mechanism and low frequency noise of long wave HgCdTe devices

Research progress on p-type doping mechanism and low frequency noise of long wave HgCdTe devices

Nanobob: a cubesat mission concept for quantum communication experiments in an uplink configuration

Type-II superlattices: a promising material for space applications

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