High-performance large format impurity band conductor focal plane arrays for astronomy applications

2010 ◽  
Author(s):  
Robert Mills ◽  
John Edwards ◽  
Eric Beuville ◽  
Andrew Toth ◽  
Elizabeth Corrales ◽  
...  
Keyword(s):  
Focal Plane ◽  
High Performance ◽  
Impurity Band ◽  
Focal Plane Arrays ◽  
Large Format

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

Fabrication of high-performance large-format MWIR focal plane arrays from MBE-grown HgCdTe on 4″ silicon substrates

2001 ◽  
Vol 30 (6) ◽  
pp. 566-573 ◽  
Author(s):  
J. B. Varesi ◽  
R. E. Bornfreund ◽  
A. C. Childs ◽  
W. A. Radford ◽  
K. D. Maranowski ◽  
...  
Keyword(s):  
Focal Plane ◽  
High Performance ◽  
Focal Plane Arrays ◽  
Silicon Substrates ◽  
Large Format

Advanced III/V quantum-structure devices for high performance infrared focal plane arrays

2009 ◽  
Author(s):  
Robert Rehm ◽  
Martin Walther ◽  
Johannes Schmitz ◽  
Frank Rutz ◽  
Joachim Fleissner ◽  
...  
Keyword(s):  
Focal Plane ◽  
High Performance ◽  
Focal Plane Arrays ◽  
Quantum Structure ◽  
Infrared Focal Plane Arrays

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.

The development of InGaAs short wavelength infrared focal plane arrays with high performance

2017 ◽  
Vol 80 ◽  
pp. 112-119 ◽  
Author(s):  
Xue Li ◽  
Haimei Gong ◽  
Jiaxiong Fang ◽  
Xiumei shao ◽  
Hengjing Tang ◽  
...  
Keyword(s):  
Focal Plane ◽  
Short Wavelength ◽  
High Performance ◽  
Focal Plane Arrays ◽  
Infrared Focal Plane Arrays

Heteroepitaxial HgCdTe/CdZnTe/GaAs/Si Materials for Infrared Focal Plane Arrays

1990 ◽  
Vol 216 ◽  
Author(s):  
S.M. Johnson ◽  
J.B. James ◽  
W.L. Ahlgren ◽  
W.J. Hamilton ◽  
M. Ray ◽  
...  
Keyword(s):  
Focal Plane ◽  
High Performance ◽  
General Characteristic ◽  
Focal Plane Arrays ◽  
Misfit Dislocations ◽  
Cutoff Wavelength ◽  
X Ray Diffraction ◽  
Dislocation Interaction ◽  
X Ray ◽  
Si Substrates

ABSTRACTThe structural properties of LPE-grown HgCdTe on heteroepitaxial MOCVD-grown CdZnTe/GaAs/Si substrates were evaluated using high-resolution x-ray diffraction techniques and TEM. Large tilts {up to 4°} between CdZnTe layers and GaAs/Si substrates are a general characteristic of this heteroepitaxial system and are are attributed to the interaction of closely spaced misfit dislocations that arrange to form a tilt boundary. Either {112}CdTe or {552}CdTe can be grown on {112}GaAs/Si; the {552} was shown to result from a first-order twinning operation of {112}. Lamnella {111} microtwins in {111}CdZnTe/{100}GaAs/Si substrates, measured by x-ray techniques, are not readily propagated into the LPE-grown HgCdTe layer. The x-ray FWHM of the LPE HgCdTe is typically at least a factor of two lower than that of the Si-based substrate from annealing and due to the increased thickness of the layer; both mechanisms promote dislocation interaction and annihilation. High performance MWIR and LWIR HgCdTe 128×128 hybrid focal plane arrays were fabricated on these Si-based substrates. An array average of ROAj = 17.8 ohmcm2 for a cutoff wavelength of 10.8 μm at 78K was demonstrated.

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
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