... and modulation transfer functions of the 1024 x 1024 pixel arrays and the progress of dualband QWIP focal plane array development work. ...
DTIC Science & Technology
... highly uniform, and multicolor (or multispectral) IR focal plane arrays involving mid ... over MCT for LW and VLW focal plane array applications in terms ...
... uniform and multicolor (or multispectral) IR focal plane arrays involving mid ... wavelength and very long wavelength focal plane array applications in ...
... from federally funded research, testing and training ... Infrared Photodetector Focal Plane Array Test Results. ... We fabricated and tested C-QWIP focal ...
A proposed improved method of externally controlled time multiplexing of the readouts of focal-plane
NASA Technical Reports Server (NTRS)
... A few QWIP FPAs were chosen and hybridized (via an indium bump- bonding process) to a 1024 � 1024 silicon CMOS ROICs and biased at VB ...
A mid-wavelength 1024x1024 pixel quantum well infrared photodetector (QW) focal plane array has been
... GaAs/AlGaAs Quantum Well Infrared Photodetector (QWIP) Focal Plane Array Camera. ... color (or dual wavelength) QWIP focal plane arrays (FPA's). ...
Large-Format, 6-10 and 10-15 micron Dual Broadband QWIP Focal. Plane Arrays . S. V. Bandara .... However, the Fourier optics is not telecentric in the image ...
NASA Website
The quantum well infrared (IR) photodetector (QWIP) was first demonstrated nearly 20 years ago. Two- dimensional staring focal plane arrays of QWIPs were developed relatively soon after this. Unlike HgCdTe, the principal competitive technology for detecti...
National Technical Information Service (NTIS)
... of this effort is to produce large-format, staring focal plane arrays (FPAs) that ... pixel-registered, 256 x 256, dual-band focal plane array produced by ...
The Thermal Infrared Sensor (TIRS) is a QWIP based instrument intended to supplement the Operational Land Imager (OLI) for the Landsat Data Continuity Mission (LDCM) [1]. The TIRS instrument is a dual channel far infrared imager with the two bands centered at 10.8?m and 12.0?m. The focal plane assembly (FPA) consists of three 640x512 ...
NASA Astrophysics Data System (ADS)
and quantum well infrared photo detectors (QWIP) focal plane arrays. The earth observing thermal infrared (EOTIR) is typically ...
FPA was chosen and hybridized (via indium bump- bonding process) to a 1024x1024 CMOS multiplexer and biased at VB = -2 V. At temperatures below 90 K, ...
... INDIUM PHOSPHIDES, INFRARED RADIATION, LONG WAVELENGTHS, LOW STRENGTH, MERCURY CADMIUM TELLURIDES, FOCAL PLANE ...
... A multicolor, Quantum-Well Infrared Photodetector (QWIP ... Focal Plane Array (FPA) is proposed ... Matlab and OPNET Modeler (copyrighted) software ...
bonding process) to a 320x256 pixel CMOS read out integrated circuit (ISC-0006). Fig. 21 shows a focal plane array hybrid. ...
The sample was grown on a semi-insulating 3-inch GaAs substrate by molecular beam epitaxy. .... FPA was chosen and hybridized (via indium bump-bonding process) .... the camera is a 100 mm focal length AR coated germanium lens, ...
Since 2002, the THALES Group has been manufacturing sensitive arrays using QWIP technology based on GaAs and related III-V compounds, at the Alcatel-Thales-III-V Lab (formerly part of THALES Research and Technology Laboratory). In the past researchers claimed many advantages of QWIPs. Uniformity was one of these and has been the key parameter for the ...
This paper reports the first demonstration of the megapixel-simultaneously-readable and pixel-co-registered dual-band quantum well infrared photodetector (QWIP) focal plane array (FPA). The dual-band QWIP device was developed by stacking two multi-quantum-well stacks tuned to absorb two different infrared ...
A long-wavelength large format Quantum Well Infrared Photodetector (QWIP) focal plane array has been
Geostationary imaging of trace constituents in the atmosphere represents a new ...... and QWIP focal plane arrays include less vibration, no acoustic noise, ..... J.L. Miller, H. Duvoism III, and G. Wiltsey, Helmet-mounted uncooled ...
... III-V Quantum Well Infrared Photodetectors (QWIPs ... Focal Plane Arrays Staring Imaging Sensor Systems ... coupling of normal incidence IR radiation in ...
infrared photo detectors (QWIP) focal plane arrays. HyTES will operate between 7.5 and 12 ?m. Spectral information from this wavelength ...
We have designed and fabricated an optimized long-wavelength/very- long-wavelength two-color quantum well infrared photodetector (QWIP) device structure. The device structure was grown on a 3-in semi- insulating GaAs substrate by molecular beam epitaxy (M...
We have demonstrated a two-contact quantum well infrared photodetector (QWIP) exhibiting simultaneous photoresponse in both the mid- and the long-wavelength atmospheric windows of 3-5 ?m and of 8-12 ?m. The structure of the device was achieved by sequentially growing a mid-wavelength QWIP part followed by a long-wavelength QWIP part ...
Rapid progress in the development of quantum well IR photodetectors (QWIPs) has made it possible to manufacture sensitive, large area, highly uniform GaAs/AlGaAs staring focal plane arrays (FPAs). Because of the maturity of the GaAs growth technology, the stability of the material system, and good performance in the long wave IR ...
We present dual-band infrared image data collected as part of the Multidomain Smart Sensors effort at the U. S. Army Research Laboratory (ARL). The goal of this effort is to produce large-format, staring focal plane arrays (FPAs) that are able to see the ...
8 Twenty five 256x256 QWIP focal plane arrays on a 3 in. ... the focal plane array is 25 mK at an operating temperature of 70 K and bias VB = -1 V. b. Fig. 10 (a) ...
Today, most infrared focal plane arrays (FPAs) utilize a hybrid scheme. To achieve higher device reliability and lower cost, monolithic FPAs with Si based readout integrated circuits (ROICs) are the trend of the future development. In this paper, two approaches for monolithic FPAs are proposed: double sided integration and selective epitaxy integration. ...
The current state of focal plane arrays (FPAs) made from quantum well infrared photodetectors (QWIPs) is presented. In the last decade, QWIP technology has successfully transitioned at several companies from research and development to manufacturing and, today, represents a commercial success in cooled ...
During this reporting period (02-01-94 to 04-30-94) we have continued to make excellent progress. We report two new normal incidence p-type strained-layer III-V quantun well infrared photodetectors (QWIPs) for 3-5 and 8-14 um detection. An ultra-low dark ...
During this reporting period (08-01-93 to 10-31-93) we have continued to make significant progress towards the program goals. We have made a major breakthrough in the development of a new normal incidence p-type strained-layer InGaAs/InAlAs QWIP grown on ...
The thermal infrared sensor (TIRS) is a QWIP based instrument intended to supplement the Operational Land Imager (OLI) for the Landsat Data Continuity Mission (LDCM) [See Landsat project description at: http://landsathandbook.gsfc.nasa.gov/handbook/handbook_htmls/chapter1/chapter1.html, [1]. The LDCM is planned to be launched in late 2012 and will continue the 35 year legacy ...
The GaAs/AlGaAs based Quantum Well Infrared Photodetectors (QWIPs) afford greater flexibility than the usual extrinsically doped semiconductor IR detectors because the wavelength of the peak response and cutoff can be continuously tailored over any wavelength between 6-20 micrometers. The spectral band width of these detectors can be tuned from narrow (DELTA)lamba/lamba ...
The use of arsine in metal-organic vapor phase epitaxy (MOVPE) growth is well established in the compound semiconductor industry but associated with large potential risks due to its high toxicity. Worldwide efforts are therefore being made to replace it with less hazardous source materials. Acreo, a commercial supplier of quantum well infrared photodetector (QWIP) ...
Advancements in III-V semiconductor based, Quantum-well infrared photodetector (QWIP) and Type-II Strained-Layer Superlattice detector (T2SLS) technologies have yielded highly uniform, large-format long-wavelength infrared (LWIR) QWIP FPAs and high quantum efficiency (QE), small format, LWIR T2SLS FPAs. In this article, we have analyzed the ...
Large format corrugated quantum well infrared photodetector (C-QWIP) focal plane arrays (FPAs) have been developed over the past two years. The results of this development have demonstrated the potential for this technology to satisfy requirements for very large format high performance long-wave infrared (LWIR) imaging systems. One ...
FLIR Systems, Inc. has designed and fabricated the ISC0501 CMOS readout integrated circuit (ROIC) for quantum well infrared photodetectors (QWIPs). The ISC0501 is a two-color 1024 � 1024 format array with a 30 ?m pixel pitch. The ROIC contains a separate analog signal path for each wavelength band. Separate signal paths allow the two-colors to have optimized detector biases, ...
A mature production technology for Quantum Well Infrared Photodetector (QWIP) focal plane arrays (FPAs) and InAs/GaSb superlattice (SL) FPAs has been developed. Dual-band and dual-color QWIP- and SL-imagers are demonstrated for the 3-5 ?m and 8-12 ?m atmospheric windows in the infrared. The simultaneous, co-located ...
In this paper, the authors discuss the development of very sensitive, very long wavelength infrared GaAs/Al{sub x}Ga{sub 1{minus}x}As quantum well infrared photodetectors (QWIP`s) based on bound-to-quasi-bound intersubband transition, fabrication of random reflectors for efficient light coupling, and the demonstration of a 15-{micro}m cutoff 128 x 128 ...
Energy Citations Database
QWIPs are well known for their stability, high pixel-pixel uniformity and high pixel operability which are quintessential parameters for large area imaging arrays. In this paper we report the first demonstration of the megapixel-simultaneously-readable and pixel-co-registered dual-band QWIP focal plane array (FPA). ...
Project Objectives: to develop ultra-low dark current and high detectivity planar metal grating coupled bound-to-miniband(BTM) III-V quantum well infrared photodetectors, (QWIPs) for 8 to 12 micrometer focal plane array (FPA) staring IR sensor system; to ...
Infrared (IR) sensor technology is critical to all phases of ballistic missile defense. Traditionally, material systems such as indium antimonide (InSb), platinum silicide (PtSi), mercury cadmium telluride (MCT), and arsenic doped silicon (Si:As) have dom...
Infrared (IR) sensor technology is critical to all phases of ballistic missile defenses. Traditionally, material systems such as indium antimonide (InSb), platinum silicide (PtSi), mercury cadmium telluride (MCT), and arsenic doped silicon (Si: As) have d...
In this reporting period, we have continued to make a significant progress towards the program goals. We have designed, fabricated and characterized several metal grating coupled bound-to-miniband (BTM) and step-bound-to-miniband (SBTM) transition QWIPs o...
The corrugated quantum-well infrared photodetector (C-QWIP) uses total internal reflection to couple normal incident light into the optically active quantum wells. The coupling efficiency has been shown to be relatively independent of the pixel size and w...
The Jet Propulsion Laboratory (JPL) is developing a 512x640-format, dual broadband, Quanum Well Infrared Photodetector (QWIP) focal plane array (FPA) for an imaging interferometer. This is a new type of imaging interferometer which is based on special Fourier-transform spectroscopy, scans interferograms digitally without moving any ...
Jet Propulsion Laboratory is actively developing the III�V based infrared detector and focal plane arrays (FPAs) for remote sensing and imaging applications. Currently, we are working on Superlattice detectors, multi-band quantum well infrared photodetectors (QWIPs), and quantum dot infrared photodetector (QDIPs) technologies ...
We have demonstrated a dual-band quantum well infrared photodetector (QWIP) exhibiting simultaneous photoresponse both in the mid and the long wavelength atmospheric windows of 3-5 ?m and of 8-12 ?m, but the device only has two ohmic contacts. The structure of the device was achieved by sequentially growing a mid wavelength part (MWQWIP) followed by a long wavelength part ...
Quantum Well Infrared Photodetectors (QWIPs) based infrared focal plane arrays (FPAs) are commercially available in the single color. QWIP Technologies, Inc. provides a number of QWIPCHIPTM FPAs available in the single-color, dual-color and even multiple-color, as well as varieties of physical formats in the ...
Investigations of the performance of GaAs/AlGaAs quantum well IR photoconductors (QWIPs) as compared to HgCdTe photodiodes operated at temperatures below 77 K in the long-wavelength IR (LWIR) region are presented. In comparative studies, the current standard n[sup +]-p HgCdTe photodiodes as well as p[sup +]-n photodiodes are considered. Investigations of the fundamental ...
Quantum Well Infrared Photodetectors (QWIPs) based infrared focal plane arrays (FPAs) have been widely researched and investigated in the 3-5 um and 6-20 um wavelength ranges. The demonstrations of QWIP FPAs include single-color, dual-color and even multiple-color, as well as varieties of physical formats in the ...
This paper discusses the performance difference of two long-wave (8 to 12 microns) cooled infrared focal plane arrays applied to spectral imaging, one using a HgCdTe detector array and the other using a QWIP detector array. QWIP detectors tend to have a much narrower spectral response than HgCdTe detectors, ...
Quantum well infrared photodetector (QWIP) technology has allowed the realization of low cost staring focal plane arrays (FPAs). However, AlGaAs/(In)GaAs QWIP FPAs suffer from low quantum and conversion efficiencies under high frame rate and/or low background conditions.We extensively discuss the effect of sensor ...
Development and production of up-to-date IR focal plane arrays (FPA) in leading foreign countries are analyzed. Cadmium-mercury telluride (CMT) FPA are discussed for near, middle and long infra-red (IR) ranges including those ones operating in the time delay and integration (TDI) mode; FPA of indium antimonide, platinum silicide, lead selenide and ...
A novel integrated two terminal structure of Quantum Well Infrared Photodetector (QWIP) with bias controlled dual-band detection at the long wavelength infrared (LWIR) and near infrared (NIR) atmospheric windows is demonstrated. The LWIR sensor is based on a GaAs/AlGaAs standard QWIP, while the NIR sensor is based on a strained InGaAs/GaAs quantum wells ...
Research on Mercury Cadmium Telluride (HgCdTe or MCT) and group III-V based infrared materials is being conducted for the development of advanced, especially large area IR detector and focal plane arrays. The focus of this research has been on materials for Quantum Well Infrared Photo Detectors (QWIPs), Sb based type II superlattice ...
During this reporting period (02-01-94 to 04-30-94) we have continued to make excellent progress. We report two new normal incidence p-type strained-layer III-V quantun well infrared photodetectors (QWIP's) for 3-5 and 8-14 um detection. An ultra-low dark current p-type tensile strained-layer (PTSL) In(0.3)Ga(0.7)As / In(0.52)Al(0.48)As QWIP grown on InP ...
... Title : Adaptive Focal Plane Array: A Compact ... Descriptors : *FOCAL PLANE ARRAYS, *MICROELECTROMECHANICAL SYSTEMS, MILITARY ...
During this reporting period we have continued to make progress towards the program goals. We have designed, fabricated, and characterized several new types of 2-D metal grating coupled n-type GaAs/AlGaAs, AlAS/AlGaAs,InAlAs/InGaAs, and InGaP/GaAs QWIPs f...
A 9-{micro}m cutoff 256 x 256 hand-held quantum well infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array and its performance in quantum efficiency, NE{Delta}T, minimum resolvable temperature (MRTD), uniformity, and operability.
We have designed and fabricated an optimized long-wavelength/very-long-wavelength two-color quantum well infrared photodetector (QWIP) device structure. The device structure was grown on a 3-in semi-insulating GaAs substrate by molecular beam epitaxy (MBE). The wafer was processed into several 640 x 486 format monolithically integrated 8-9 and 14-15 micrometers two-color (or ...
The family of 2D detection modules at AEG Infrarot-Module GmbH (AIM) based on platinum silicide (PtSi) GaAs/AlGaAs quantum well (QWIP) devices or mercury cadmium telluride (MCT) focal planes for applications in either the 3.5 micrometers (MWIR) or 8.10 micrometers (LWIR) range was recently extended. Two new devices have been realized ...
Full video format focal plane array (FPA) modules with up to 640 X 512 pixels have been developed for high resolution imaging applications in either mercury cadmium telluride (MCT) mid wave (MWIR) infrared (IR) or platinum silicide (PtSi) and quantum well infrared photodetector (QWIP) technology as low cost alternatives to MCT for high ...
... The pixel pitch for the 640�480 FPA that acquired ... to detect the smokestack of a coal-fired electric ... range for identification of a tank-sized tar- get than ...
... However, the ZnCdTe substrates necessary for high-quality HgCdTe FPAs are limited to a diameter of approximately 1 in. ...
... separate bias supplies connected to the top and bottom ohmic-contact bumps of the ... wake, a blast of warm air that slightly heated the leaves on the ...
... BARRIERS. THE ARRAUS WERE INDIUM BUMP BONDED TO AN ROIC GIVING SIMULTANEOUS IMAGES. THE RELATIVE ...
A majority of infrared sensors used for imaging arrays operating in the long-wavelength infrared wavelength region between eight and twelve microns are based on mercury cadmium telluride (HgCdTe). This material system is unable to satisfy all of the requirements that are imposed by modern applications. Structural difficulties due to poor uniformity, high defect densities, and weak bond strengths ...
The next generation of infrared (IR) focal plane arrays (FPAs) will need to be a significant improvement in capability over those used in present-day second generation FLIRs. The Army"s Future Combat System requires that the range for target identification be greater than the range of detection for an opposing sensor. To accomplish this mission, the number ...
Signal-to-noise ratio (SNR) depends on how the signal is generated above the noise level at the detector. For QWIP (Quantum Well Infrard Photoconductor) photoconductive gain, noise gain and quantum efficiency are important properties that determine the operating parameters in a background-limited operation. At high bias the photoconductive and noise gain becomes comparable, ...
Third generation thermal imagers with dual/multi-band operation capability are the prominent focus of the current research in the field of infrared detection. Dual band quantum-well infrared photodetector (QWIP) focal plane arrays (FPAs) based on various detection and fabrication approaches have been reported. One of these approaches ...
A four-band quantum well infrared photodetector (QWIP) focal plane array (FPA) has been demonstrated by stacking different multi-quantum well structures, which are sensitive in 4-5.5, 8.5-10, 10-12, and 13-15.5 ?m infrared bands. This 640�514 format FPA consists of four 640�128 pixel areas which are capable of acquiring images in ...
The Laboratoire Central de Recherches (LCR) of Thomson Csf and the Societe Francaise de Detecteurs Infrarouge (Sofradir) combined their complementary skills to realize a MultiQuantum Well Infrared Photodetector (QWIP) Focal Plane Array (FPA) sensitive in the long wavelength range of the spectrum (LWIR). Sofradir has industrialized a ...
Due to the well established GaAs material and processing technology QWIPs are viable candidates for high resolution (greater than 128 by 128 pixels), low cost LWIR (8 - 12 micrometer) focal plane arrays (FPAs). Usually n-doped AlGaAs/GaAs QWIPs are used since, at least to date, these have been shown to provide the ...
Selective area laser annealing of GaAs/AlxGa1-xAs quantum well infrared photodetector (QWIP) material has been investigated as a possible route towards the fabrication of two-color low-cost focal plane array devices. Tuning of the wavelength response of the material has been achieved as a consequence of the quantum well intermixing ...
Infrared (IR) sensors are critical to all phases of ballistic missile defense (BMD), including surveillance, threat detection, tracking, identification, discrimination, targeting, and interception. The Discriminating Interceptor Technology Program (DITP) under development by the BMDO Sensors and Interceptors Directorate (BMDO/TOS) supports the requirements of BMDO's National Missile Defense and ...
Sensitivity, noise and performance criteria were evaluated for different varieties of InAs/InGaAs quantum dots-in-a-well (DWELL) and quantum dots-in-a-double-well (double DWELL) focal plane arrays (FPAs). These characteristics were measured and compared to those measured from a commercial quantum well infrared photodetector (QWIP) in ...
... of effort: Westinghouse Superconducting IR Focal Plane Array Contractor: Westinghouse ... research on HTS IR focal plane arrays, their construction ...
... Wavelet Transform of Fixed Pattern Noise in Focal Plane Arrays ... noise, fractional Brownian motion, power-law shot noise, staring focal plane array, ...
... The array is rotated about the focal plane of ... Descriptors : *PATTERN RECOGNITION, *PATENTS, *FOCAL PLANE ARRAYS, REAL TIME, RADAR ...
... The array is rotated about the focal plane of ... REAL TIME, OPTICAL IMAGES, RADAR IMAGES, FOCAL PLANE ARRAYS, WAVELET TRANSFORMS ...
... device development for infrared focal-plane array applications. Descriptors : *FABRICATION, *FOCAL PLANE ARRAYS, INFRARED DETECTORS ...
... required to build a focal plane array ladar system. ... Descriptors : *OPTICAL RADAR, *FOCAL PLANE ARRAYS, IMAGE PROCESSING, SYMPOSIA ...
New developments in 2-D, wide-bandwidth HgCdTe (MCT) and GaAs quantum-well infrared photodetectors (QWIP) coupled with Monolithic Microwave Integrated Circuit (MMIC) technology are now making focal plane array coherent infrared (IR) cameras viable. Unlike conventional IR cameras which provide only thermal data about a scene or target, ...
DOE Information Bridge
The 3rd generation of infrared (IR) detection modules is expected to provide advanced features like higher resolution 1024x1024 or 1280x720 pixels and/or new functionalities like multicolor or multi band capability, higher frame rates and better thermal resolution. This paper is intended to present the current status at AIM on the Mercury Cadmium Telluride (MCT), quantum well ...
Since 2006, MIT Lincoln Laboratory has been developing Digital-pixel Focal Plane Array (DFPA) readout integrated circuits (ROICs). To date, four 256 � 256 30 ?m pitch DFPA designs with in-pixel analog to digital conversion have been fabricated using IBM 90 nm CMOS processes. The DFPA ROICs are compatible with a wide range of detector materials and cutoff ...
We report on the development and testing of a new dual-band infrared focal plane array (FPA) specifically designed to detect buried land mines. The detector response spectra were tailored to take advantage of the sharp spectral features associated with disturbed soils. The goal was to have a ``blue'' channel with peak response near 9.2 ?m and a ``red'' ...
... Accession Number : ADA229652. Title : Westinghouse Superconducting IR Focal Plane Array. Corporate Author : WESTINGHOUSE ...
... The array is rotated about ... VISION, *PHOTODETECTORS, *FOCAL PLANES, SCANNING, FREQUENCY, LIGHT, ARRAYS, RADAR ...
The present invention relates to curved focal plane arrays. More specifically, the present invention
... Title and Subtitle Precision Photonic Readout for Focal Plane Signals ... The fundamental advantage of modulating the phase, is that the signal phase ...
... Title : INTEGRATED FOCAL PLANE IRRADIANCE PATTERNS FOR GAUSSIAN BEAMS FOCUSED THROUGH CIRCULAR ANNULAR ...
... A two dimensional focal plane array of Schottky ... The array is designed for mating with ... EQUIPMENT, *CAMERAS, *ARRAYS, INFRARED IMAGES ...
Nov 24, 2008 ... PROPOSAL TITLE: HYPERSPECTRAL LONGWAVE INFRARED FOCAL PLANE ARRAY AND CAMERA BASED ON QUANTUM WELL ...
... In this paper, a complete procedure is proposed for the calibration of a focal plane array in quantitative infrared nondestructive testing (NDT). ...
... Abstract : The purpose of this project was to enhance the performance of Infrared Focal Plane Array (IRFPA) detectors through the replacement of ...
... Title : Advances in Focal Plane Technology. Proceedings of the Society of Photo-Optical Instrumentation Engineers. Volume 217. ...
... Abstract : The focal plane array test facility provides complete radiometric characterization of detector arrays and hybrid arrays. ...
AlGaAs/InGaAs on GaAs substrate is the most commonly used material for QWIPs. Using these compounds, we have already demonstrated focal plane arrays from 4.5 to 15 ?m. Furthermore, detection below the CO2 absorption band (4.2 ?m) can be very useful for various applications. However, going to lower wavelengths requires a higher indium ...
A thermal hyperspectral imager is underdevelopment which utilizes the compact Dyson optical configuration and the broadband (8-12 ?m) quantum well infrared photodetector (QWIP) focal plane array technology. The Dyson configuration uses a single monolithic prism-like grating design which allows for a high throughput instrument (F/1.6) ...
Multiband detection capability is a critical attribute of practical infrared (IR) sensing systems for use in missile defense detect-and-track applications. This capability, already demonstrated in mercury-cadmium telluride (MCT) photodiodes and quantum well infrared photodetectors (QWIPs), has not previously been explored in type II-superlattices (T2SLs), a newer system which ...
We have extended our investigation of corrugated quantum well infrared photodetector focal plane arrays (C-QWIP FPAs) into the far infrared regime. Specifically, we are developing the detectors for the thermal infrared sensor (TIRS) used in the NASA Landsat Data Continuity Mission. This mission requires infrared detection cutoff at ...
Oak Ridge National Laboratory (ORNL) has been developing advanced coherent IR heterodyne receivers for plasma diagnostics in fusion reactors for over 20 years. Recent progress in wide band IR detectors and high speed electronics has significantly enhanced the measurement capabilities of coherent receivers. In addition, developments in new HgCdTe and quantum well IR photodetector ...
... Title : The Evolution of Metal Silicide Schottky Barrier Infrared Focal Plane Detectors. ... in focal planes which can image in the staring mode with more ...
... Title : THE NEUROSEEK INFRARED FOCAL PLANE ARRAY: A HIGH DENSITY TWO COLOR ON-CHIP NEUROMORPHIC PROCESSING FOCAL ...
The 3rd generation of infrared (IR) detection modules is expected to provide advanced features like higher resolution 1024x1024 or 1280x720 pixels and/or new functions like multicolor or multi band capability, higher frame rates and better thermal resolution. This paper is intended to present the current status at AIM on quantum well (QWIP) and antimonide superlattices (SL) ...
... A PINHOLE IS LOCATED AT A PLANE CONJUGATE TO THE FOCAL PLANE OF THE SCANNING LASER BEAM. THIS ...
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Arrays of miniature focusing optics located at the focal plane can improve the performance of focal plane systems. By more completely collecting the light at the focal plane and concentrating it into a smaller spot size on the detector plane, the ...
EVLA MEMO 53 A VIVALDI FOCAL PLANE ARRAY FOR EVLA Walter Brisken National Radio Astronomy Observatory March 6, 2003 Abstract A focal plane array is investigated as a possible option for sub-periodic array at even lower frequencies. 4 A focal plane array for EVLA 4.1 ...
E-print Network
-level focal plane processor array. This paper describes a method to design an efficient focal plane at each detector site in the focal plane array. Digitizing and processing a pixel at the detection site (b) Focal Plane Processing ...
The focal plane arrays consist of a silicon P-i-N detector array bump bonded to 128 x ... focal plane industry where radiation hardening of focal plane arrays is, ...
The objectives of this contract were to analyze potential system applications for 3 to 5 micrometers TE-cooled staring focal planes and to determine both universal and unique focal plane requirements for each of the applications; determine critical detect...
This report analyzes the problems of modeling staring focal plane array systems. Two problem areas are highlighted; the difficulty in modeling the operator interface and the inadequate characterization of focal plane array noise sources. The effects of al...
The focal plane consists of an array of 42 charge coupled devices (CCDs). Each CCD is 2.8 by 3.0 cm with 1024 by 1100 pixels. The entire focal plane contains ...
Aug 15, 2007 ... key elements required to implement a focal-plane array on a large high- ... focal- plane array (FPA) receiver system for space communications ...
Dual Band MWIR/LWIR Focal Plane Array Test Results August 1999 ... Title and Subtitle Dual Band MWIR/LWIR Focal Plane Array Test Results ...
This report describes a wafer-scale design for an infrared focal plane processor (FPP) to operate in a space environment. The functions of a generic focal plane processor are described, followed by a detailed discussion of a design to be implemented in RV...
0.1 m r = will see a tenfold increase in its focal plane spot diameter. The need for a focal plane array to capture all of this energy for coherent ...
The focal plane array test facility provides complete radiometric characterization of detector arrays and hybrid arrays. Most testing is performed in the Focal Plane Characterization Chamber (FPCC), which provides a cold, low background environment for fo...
... The theory for the focal properties is developed by applying Fermat's principle of least time to selected terms resulting from a finite series expansion ...
... Accession Number : ADD950317. Title : ADVANCED MICROBOLOMETER DIGITAL OUTPUT FOCAL PLANE ARRAY,. Corporate ...
An airborne thermal hyperspectral imager is underdevelopment which utilizes the compact Dyson optical configuration and quantum well infrared photo detector (QWIP) focal plane array. The Dyson configuration uses a single monolithic prism-like grating design which allows for a high throughput instrument (F/1.6) with minimal ghosting, ...
Defence and astronomy are particularly demanding applications of infrared focal plane arrays in the 8�20 ?m range of wavelength. QWIP is a good candidate for the low flux applications. Dark current is clearly a limiting parameter for it. Therefore, we have studied the dark current at very low operating temperature where the ...
Here we report the first demonstrations of infrared focal plane array (FPA) based on GaAs and InP based quantum dot infrared photodetectors (QDIPs). QDIPs are extension of quantum well infrared photodetectors (QWIPs) and are predicted to outperform QWIPs due to their potential advantages including normally incident ...
The Thermal Infrared Sensor (TIRS) on board the Landsat Data Continuity Mission (LDCM) is a two-channel, push-broom imager that will continue Landsat thermal band measurements of the Earth. The core of the instrument consists of three Quantum Well Infrared Photodetector (QWIP) arrays whose data are combined to effectively produce a linear array of 1850 pixels for each band ...
Large format detectors in the long wavelength region of the thermal infrared (TIR) spectrum (? � 11-15 ?m) with very high radiometric and imaging performances are of increasing scientific and operational interest for, e.g. meteorology and atmospheric chemistry in missions such as Meteosat Third Generation (MTG) or Planetary Science missions.A 30 months ESA project started in 2008, whose overall ...
Novel InAs/ InGaAs quantum dots-in-a-well (DWELL) infrared photodetectors are discussed. These detectors, in which the active region consists of InAs quantum dots embedded in an InGaAs well quantum well, represent a hybrid between a conventional quantum well infrared photodetector (QWIP) and a quantum dot infrared photodetector (QDIP). Like QDIPs, the DWELL detectors display ...
Recently, quantum dot infrared photodetectors (QDIP) have been intensively investigated because they can be fabricated by conventional matured GaAs processing. QDIP can detect normal incident light in contrast to quantum well infrared photodetectors (QWIP) which need optical grating or reflector. Also QDIPs operate at higher temperature, taking advantage of their lower dark ...
and new FPA multiplexers. A short history of focal plane multiplexer ... Improvements to the focal planes cover five areas: multiplexer upgrades, ...
... Accession Number : ADD523753. Title : Infrared/Charge-Coupled Device (IR/CCD) Focal Planes: Principles and Practice. ...
