Overview of DRS uncooled VOx infrared detector development

Li, Chuan C.; Han, C. J.; Skidmore, George D.

doi:10.1117/1.3593155

Cited by 40 publications

(20 citation statements)

References 2 publications

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“…Thermal imaging has been mostly used for defense application until recently and this is particularly due to the cost of infrared detectors and optics. Recent progress of uncooled focal plane array detector based on amorphous silicon or vanadium oxide, in terms of performance and cost, has greatly boosted the widespread of this technology for commercial application. However, much less progress has been achieved in the field of infrared optics which are still mainly fabricated using the rare and expensive single crystalline germanium.…”

Section: Introductionmentioning

confidence: 99%

Transparent ZnS Ceramics by Sintering of High Purity Monodisperse Nanopowders

et al. 2013

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International audienceWe report an efficient way of preparing transparent ZnS ceramics using the hot-pressing technique. It has been found that the transparency is highly dependent on the purity and the grain size distribution of the starting ZnS powders. Highly pure and monodisperse ZnS powders have been obtained by posttreatment of the precipitated powders in a H2S/N2 flow for 2 h at 600°C. The obtained ZnS ceramics show fully dense and homogeneous microstructure with average grain size of ~1 μm and smooth grain boundaries, leading to an excellent transmission of around 70% in the mid- and far- IR regions. The preparation technique described in this study is highly reproducible

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Section: Introductionmentioning

confidence: 99%

Transparent ZnS Ceramics by Sintering of High Purity Monodisperse Nanopowders

et al. 2013

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“…마이크로 볼로미터 비냉각 적외선 검출기 기술은 작은 부 피, 무게, 그리고 저전력이 요구되는 환경에서 적외선 시스 템 활용을 확장해가고 있으며 이로 인하여 비냉각 적외선 검출기 기술은 더욱 발전해가고 있다 [1][2][3]. 마이크로 볼로미 터 적외선 초점면 배열(IR Focal Plane Array, IR FPA) 기 술은 그 성능 측면에서도 고급의 양자형 검출기를 따라가고 있어 과거 냉각형 검출기가 사용되는 부분에도 요즈음에는 비냉각 검출기를 사용하는 추세이다 [1,4,5].…”

Section: 서 론unclassified

“…마이크로 볼로미 터 적외선 초점면 배열(IR Focal Plane Array, IR FPA) 기 술은 그 성능 측면에서도 고급의 양자형 검출기를 따라가고 있어 과거 냉각형 검출기가 사용되는 부분에도 요즈음에는 비냉각 검출기를 사용하는 추세이다 [1,4,5].…”

Section: 서 론unclassified

Electro-thermal Feedback Effects on the Signal in a Pulse Voltage Biased μ-bolometer Focal Plane Array

Park¹,

Han²

2012

The Transactions of The Korean Institute of Electrical Engineer

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-In this paper, the analytical models for the electrothermal feedback of a µ-bolometer focal plane array(FPA) are proposed and applied to the conceptually designed FPA to investigate the electrothermal feedback effect on bolometer FPA signal. The temperature and resistance change of the µ-bolometer by the electrothermal feedback(ETF) model are increased upto 20 and 35.7 % of those of no feedback case, respectively, while those by the effective thermal conductance(ETC) model increased 8.5 and 15.1 %. The integration current and output voltage of a CTIA used as an column amplifier of FPA are also increased upto 41.6 and 32.4 % by the ETF model, while increased upto 17.2 and 13.5 % by the ETC model. The proposed models give more accurate temperature change, accordingly larger signal than no feedback considering case. Electrothermal feedback effect should be considered to design a high performance and high density µ-bolometer FPA. The proposed models are very useful to investigate the transient thermal analysis, also considered to be useful to predict the responsivity and dynamic range of µ-bolometer FPAs.

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“…RMS, root mean square. Figure 10 SEM image (a) and schematic (b) of a microbolometer using the 'umbrella design' from DRS Inc. 62 SEM, scanning electron microscope.…”

Section: Spectrally Selective Detector Technologymentioning

confidence: 99%

Spectral selectivity in infrared thermal detection

2012

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A review is made of the physics and technology of spectrally selective thermal detectors, especially those operating at non-cryogenic temperatures. The background radiation noise fluctuations are rederived for arbitrary spectral characteristics. Infrared absorption due to phonons and free carriers is discussed followed by a review of published works on artificial infrared absorption materials such as patterned grids, nanoparticles, plasmonic structures, metamaterials and others. Subsequently, the literature of the spectral characteristics of broadband thermal detectors and spectrally selective thermal detectors is reviewed. Finally, the authors speculate on the directions that future research and development in the area will take regarding architectures, sensitivity and spectral characteristics.

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Overview of DRS uncooled VOx infrared detector development

Cited by 40 publications

References 2 publications

Transparent ZnS Ceramics by Sintering of High Purity Monodisperse Nanopowders

Transparent ZnS Ceramics by Sintering of High Purity Monodisperse Nanopowders

Electro-thermal Feedback Effects on the Signal in a Pulse Voltage Biased μ-bolometer Focal Plane Array

Spectral selectivity in infrared thermal detection

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