Large format multicolor QWIP focal plane arrays

2009 ◽  
Author(s):  
A. Soibel ◽  
S. D. Gunapala ◽  
S. V. Bandara ◽  
J. K. Liu ◽  
J. M. Mumolo ◽  
...  
Keyword(s):  
Focal Plane ◽  
Focal Plane Arrays ◽  
Large Format

Large-format and multispectral QWIP infrared focal plane arrays

2003 ◽  
Author(s):  
Arnold C. Goldberg ◽  
Kwong-Kit Choi ◽  
Murzy Jhabvala ◽  
Anh La ◽  
Parvez N. Uppal ◽  
...  
Keyword(s):  
Focal Plane ◽  
Focal Plane Arrays ◽  
Large Format ◽  
Infrared Focal Plane Arrays

IMAGING PERFORMANCE OF ADVANCED QWIP FOCAL PLANE ARRAYS

2002 ◽  
Vol 12 (03) ◽  
pp. 659-690 ◽  
Author(s):  
ARNOLD GOLDBERG
Keyword(s):  
Quantum Efficiency ◽  
Temperature Difference ◽  
Focal Plane ◽  
Focal Plane Arrays ◽  
Operating Conditions ◽  
Dual Band ◽  
Large Format ◽  
Ir Camera ◽  
Wide Range ◽  
Imaging Performance

Since the first demonstration of the quantum well infrared photodetector (QWIP) in the 1980s, there has been much progress in the application of QWIPs to the production infrared (IR) imaging systems. At this time, focal plane arrays (FPAs) made from QWIPs are readily available for insertion in IR cameras with formats as large as 640 × 480 pixels. Several organizations now have commercially available IR camera systems using QWIPs. In spite of the low single-pixel quantum efficiency relative to MCT, excellent IR imagery has been demonstrated with large format (640 × 480 pixels) single-band and moderate format (256 × 256 pixels) dual-band FPAs. With a large-format staring FPA, one can integrate the signal current for a relatively long time to produce images of similar quality to that from a scanned line array run at the same frame rate. In fact, it can be shown that due to the nature of the noise in a QWIP device, the noise performance of a QWIP FPA can be better than that of MCT FPA as long as the conversion efficiency (the product of the quantum efficiency and the photoconductive gain) is high enough for the read-out integrated circuit (ROIC) integration capacitor to be filled in a frame time. In this chapter the results of laboratory and field tests on large-format single-color QWIP FPAs operating in the LWIR band and dual-band FPAs operating in both the MWIR and LWIR bands simultaneously will be shown. Single-color and dual-band arrays will be shown to give excellent imaging performance and that dual-band FPAs offer unique capabilities to investigate the phenomenology of targets and backgrounds. The performance of the FPAs will be presented from a system performance perspective over a wide range of operating conditions (temperature, bias, integration time, etc.). Results of measurements of noise-equivalent temperature difference (NEΔT), minimum resolvable temperature difference (MRTD measured as a function of target spatial frequency), responsivity, and dark current will be reported. Imagery collected in the field will show the utility of large-format LWIR FPAs for increasing the range at which targets can be identified over previous-generation scanning imagers. Dual-band imagery collected using a QWIP FPA will show how such an array as part of a future imaging system may be able to exploit differences in the IR signatures of targets and backgrounds in the MWIR and LWIR bands to enhance the visibility of targets in cluttered environments. We also show how such an array can be used to make accurate remote temperature measurements. Finally, we will compare the performance of state-of-the-art FPAs made from QWIPs and MCT.

Demonstration of large format mid-wavelength infrared focal plane arrays based on superlattice and BIRD detector structures

2009 ◽  
Vol 52 (6) ◽  
pp. 348-352 ◽  
Author(s):  
Cory J. Hill ◽  
Alexander Soibel ◽  
Sam A. Keo ◽  
Jason M. Mumolo ◽  
David Z. Ting ◽  
...  
Keyword(s):  
Focal Plane ◽  
Focal Plane Arrays ◽  
Large Format ◽  
Infrared Focal Plane Arrays

Large-format broadband multicolor GaAs/AlGaAs quantum well infrared photodetector (QWIP) focal plane arrays

2001 ◽  
Author(s):  
Sumith V. Bandara ◽  
Sarath D. Gunapala ◽  
John K. Liu ◽  
S. B. Rafol ◽  
David Z. Ting ◽  
...  
Keyword(s):  
Quantum Well ◽  
Focal Plane ◽  
Focal Plane Arrays ◽  
Infrared Photodetector ◽  
Large Format ◽  
Quantum Well Infrared Photodetector

Modeling and stress analysis of large format InSb focal plane arrays detector under thermal shock

2013 ◽  
Vol 60 ◽  
pp. 29-34 ◽  
Author(s):  
Li-Wen Zhang ◽  
Qing-Duan Meng ◽  
Xiao-Ling Zhang ◽  
Qian Yu ◽  
Yan-Qiu Lv ◽  
...  
Keyword(s):  
Stress Analysis ◽  
Thermal Shock ◽  
Focal Plane ◽  
Focal Plane Arrays ◽  
Large Format

Dynamic power reduction in digital pixel design for large format focal plane arrays

2016 ◽  
Vol 58 ◽  
pp. 9-13
Author(s):  
Atia Shafique ◽  
Huseyin Kayahan ◽  
Sohaib Saadat Afridi ◽  
Omer Ceylan ◽  
Melik Yazici ◽  
...  
Keyword(s):  
Focal Plane ◽  
Power Reduction ◽  
Focal Plane Arrays ◽  
Large Format ◽  
Dynamic Power ◽  
Digital Pixel

Evolution of large format impurity band conductor focal plane arrays for astronomy applications

2011 ◽  
Author(s):  
Robert Mills ◽  
Eric Beuville ◽  
Elizabeth Corrales ◽  
Alan Hoffman ◽  
Gert Finger ◽  
...  
Keyword(s):  
Focal Plane ◽  
Impurity Band ◽  
Focal Plane Arrays ◽  
Large Format

Large-format multiband QWIP focal plane arrays

2003 ◽  
Author(s):  
Sarath D. Gunapala ◽  
Sumith V. Bandara ◽  
John K. Liu ◽  
Sir B. Rafol ◽  
Jason M. Mumolo
Keyword(s):  
Focal Plane ◽  
Focal Plane Arrays ◽  
Large Format

Large-format HgCdTe focal plane arrays for dual-band long-wavelength infrared detection

2009 ◽  
Author(s):  
E. P. G. Smith ◽  
A. M. Gallagher ◽  
T. J. Kostrzewa ◽  
M. L. Brest ◽  
R. W. Graham ◽  
...  
Keyword(s):  
Focal Plane ◽  
Focal Plane Arrays ◽  
Infrared Detection ◽  
Dual Band ◽  
Large Format ◽  
Long Wavelength ◽  
Long Wavelength Infrared
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