design and fabrication of high- performance lwir

The SPIE Advanced Optics for Defense Applications: UV

The recent emergence of new design capabilities materials and fabrication techniques has created a near-revolution in designing high performance single- and multi-band optical systems These developments have gone a long way towards answering the recurring demands of the military and law enforcement communities for sensor systems having longer target acquisition ranges greater

Performance LWIR Lasers for Fabrication of Superior

Performance LWIR Lasers for Fabrication of Superior Fibers Challenge Laser Heated Pedestal Growth (LHPG) is a highly delicate fabrication technique for growing the highest quality crystals This is accomplished by melting a narrow region with a highly controlled CO 2 laser beam The focused beam is moved along the crystal or floating zone and as the molten region melts the impure solid at

Design and Fabrication of High

Design and Fabrication of High-Performance LWIR Photodetectors Based on Type-II Superlattices Descriptive Note: Technical Report 04 Mar 2016 02 Jun 2017 Corporate Author: Northwestern University Evanston United States Personal Author(s): Razeghi Manijeh Report Date: 2017-08-11 Pagination or Media Count: 22 0 Abstract: Antimonide-based Type-II superlattices represent the most promising

Teledyne's high performance infrared detectors for Space

In order to obtain the highest performance focal plane arrays three aspects of the technology must be optimized: (1) growth and processing of the detector material (2) design and fabrication of the ROIC and (3) hybridization of the detector array to the ROIC and subsequent detector processing This paper will present some aspects of Teledyne's FPA fabrication process and will give

Design and fabrication of efficient miniature

Design and fabrication of efficient miniature retroreflectors for the mid- and long- range infrared Full Record Other Related Research Abstract We report our progress on the design modeling and fabrication of a step-index miniature spherical retroreflector for use in the mid-IR region (3 micron – 12 micron) Authors:

High Performance Infrared Imaging Systems

11/02/2019High Performance Infrared Imaging Systems However some military applications still need the performance of a cooled MWIR or LWIR system Typically these are applications where the higher sensitivity of a cooled system will allow longer standoff distances Applications that benefit from such performance benefits are airborne ISR missions long range surveillance applications high


A microbolometer is a specific type of bolometer used as a detector in a thermal camera Infrared radiation with wavelengths between 7 5–14 μm strikes the detector material heating it and thus changing its electrical resistance This resistance change is measured and processed into temperatures which can be used to create an image Unlike other types of infrared detecting equipment

Common Infrared Optical Materials and Coatings: A Guide

• Its high index of refraction makes it desirable for the design of lenses that otherwise might not be possible • Germanium is a diamond-turnable material so it is possible to incorporate aspheric and diffractive surfaces cost-effectively which can in turn reduce the

Quantitative comparison of the chalcogenide glass GASIR

and Silicon for use in LWIR sensor lens design Jan Verplancke1* Dr Norbert Schuster1 John Franks1 1 Umicore Electro-Optic Materials (Belgium) * jan [dot] verplancke {at} eu (dot) umicore /dot/ com 1 Introduction In recent years improvements in sensor fabrication technology have allowed infrared imaging devices to penetrate the commercial market Applications in non-contact thermal sensing

Teledyne DALSA's Uncooled LWIR Cameras Featured at

Aside from Uncooled LWIR capabilities Teledyne DALSA designs and manufactures high performance CCD and CMOS image sensors for a wide range of digital imaging applications including professional photography industrial inspection radiography aerospace and defense and security imaging Decades of research and development have earned us dozens of patents in the design and fabrication of

Novel Type II superlattice design

We have developed a new superlattice design called M-structure superlattice which acquires the beneficial properties of the well established binary – binary antimonide based SL structures used in high performance infrared detectors First it conserves the Type – II misalignment of InAs and GaSb which is capable of eliminating the electron-hole split – off band Auger transition by

Design and fabrication of Fabry Perot filters for

Design and fabrication of Fabry–Perot filters for infrared hyperspectral imagers Michael L Morley a Silviu Velicu a * Yong Chang b Christoph H Grein b c Dmitry A Kozak d Bautista Fernandez e Joel Kubby f and Neelam Guptag a EPIR Technologies Inc 590 Territorial Drive Unit B Bolingbrook Illinois 60440 Sivananthan Laboratories Inc 590 Territorial Drive Suite H Bolingbrook Illinois

Quantum Detectors – NanoMIR

The objective is the fabrication and the study of high performance cooled infrared (IR) quantum detectors made of Ga-containing InAs/GaSb type II superlattices (T2SL) or Ga-free InAs/InAsSb T2SL in new barrier architectures These Sb-based photodetectors should be able to improve the signal to noise ratio to satisfy the criteria of SWAP (Size Weight and Power) requirements with high operating


Design and Fabrication of Strain-Balanced nBn Dual-Band LWIR/LWIR Focal Plane Arrays Based on InAsSb/InAsType-II Superlattices : SMALL BUSINESS CONCERN (SBC): RESEARCH INSTITUTION (RI): NAME: NOUR LLC: NAME: Northwestern University: STREET: 1500 Sheridan Road Unit 8A: STREET: 2220 CAMPUS DR RM 4051: CITY: Wilmette: CITY: Evanston: STATE/ZIP: IL 60091 -




achieved high electromechanical performance with a Q PROCESS AND DESIGN Fabrication Process The devices were fabricated as part of a multi-user wafer using commercial foundry processes at A*STAR IME (MEMS chip with low stress AlN-on-Si) and Global Foundries (CMOS chip) followed by wafer-level bonding at IME The InvenSense AlN MEMS process begins by preparing an engineered

Lepton LWIR Camera Modules

28/04/2015Lepton Radiometric LWIR Camera Module FLIR's Lepton radiometric LWIR camera module is designed for applications that include mobile phones gesture recognition thermal imaging and night vision PureThermal Boards GroupGets' PureThermal 2 Smart I/O and PureThermal Mini Smart I/O modules are hackable thermal USB webcams for the FLIR Lepton thermal imaging camera core

T2SL meta

Long-wavelength infrared (LWIR) focal plane arrays (FPAs) needed for Earth Science imaging spectral imaging and sounding applications have always been among the most challenging in infrared photodetector technology due to the rigorous material growth device design and fabrication demands Future small satellite missions will present even more challenges for LWIR FPAs as operating

Numerical and Experimental Investigation into LWIR

However the use of AR stack layers is not trivial requiring a costly complex technology development for achieving a high transmission performance in the wide bandwidth while avoiding delamination and performance degradation issues especially at high temperatures necessary for WLVP steps 6 7 In order to reduce temperature exposures below 300 C gold-based eutectic bonding techniques in

Design Fabrication and Measured Performance of Anti

Design Fabrication and Measured Performance of Anti-Reflecting Surface Textures in Infrared Transmitting Materials Douglas S Hobbs* and Bruce D MacLeod TelAztec LLC 15 A Street Burlington Massachusetts 01803 USA ABSTRACT Rugged infrared transmitting materials have a high refractive index which leads to large reflection losses Multi-layer thin-film coatings designed for anti-reflection

Infrared Sensors for Defense

Spectral filter design manufacturing in an optimized MEMS infrastructure gives us the ability to dramatically alter the traditional price-performance tradeoff Learn More: LWIR Microbolometers VOx Other Detector Materials Our high performance single element and FPA infrared detectors utilize a wide variety of materials such as Indium Gallium Arsenide (InGaAs) Mercury Cadmium Telluride

Design and Development of Two

The high bandgap AlSb layer effectively blocks the electron and hole dark currents thereby improving the R 0 A and D* performance in type II InAs/GaSb LWIR photodiodes The large carrier effective mass associated with the InAs/GaSb material in M-structure detectors has been shown to provide more freedom in tuning the bandgap compared to other type II SLS designs [ 93 ]

Design and fabrication of efficient miniature

Design and fabrication of efficient miniature retroreflectors for the mid- and long- range infrared Full Record Other Related Research Abstract We report our progress on the design modeling and fabrication of a step-index miniature spherical retroreflector for use in the mid-IR region (3 micron – 12 micron) Authors:

Design and Fabrication of Strain

Design and Fabrication of Strain-Balanced nBn Dual-Band LWIR/LWIR Focal Plane Arrays Based on InAsSb/InAsType-II Superlattices Printer-friendly version Award Information Agency: National Aeronautics and Space Administration Branch: N/A Contract: NNX15CG49P Agency Tracking Number: 150033 Amount: $124 994 00 Phase: Phase I Program: STTR Solicitation Topic Code: T8 01

IR Coating Designs and Applications

There oxide compound materials provide the low- medium- and high- refractive indices required in the design of coatings and their deposition At wavelengths longer than ~7 m the corresponding available material choices are Fluoride and element group IIB-VIA (ZnS and ZnSe) compounds and Ge Table 2 lists general spectral transparency limits and deposition properties for the common coating

Teledyne's High Performance Infrared Detectors for Space

Teledyne's High Performance Infrared Detectors for Space Missions Paul Jerram a and James Beletic b a Teledyne e2v Space Imaging Chelmsford UK CM7 4BS b Teledyne Imaging Sensors Camarillo California USA 93012 ABSTRACT Teledyne is one of the world's leaders in the provision of infrared sensors for Earth science planetary science and astronomy This paper presents

LWIR HgCdTe focal plane array performance variations

New efforts in MBE growth and large format FPA fabrication will allow shifting of PV technology to real LWIR performance with p 10 50 5 m Problem of reproducible low-temperature p-type doping of Hg1-xCdxTe alloys is on front and should be solved as soon as possible As concerned correlation of crystalline imperfections doping and xvalue gradients with electro-physical parameters noise

NASA TechPort

The uncooled QDIP technology enables high-performance LWIR detecting on a chip with significantly reduced payload It is highly desired in many Earth science applications The Phase I work will perform feasibility investigation of the proposed device concept optimize quantum dots growth and annealing techniques and produce a preliminary design for a prototype system that can be built and


fabrication of CMOS image sensors •Including staff who work in machine vision •Largest high performance LWIR detectors ever made •Each mosaic will be 4 H2RGs •Mission will fly 8 H2RGs and 8 SIDECAR ASIC modules •Teledyne has developed a new H2RG package and qualified to TRL-6 •Active program of continued development NEOCamAsteroid Survey Mission Teledyne's High Performance


Teledyne's High Performance IR Sensors for Space Missions 4 Tunable Wavelength: Unique property of HgCdTe Hg1-xCdxTe Modify ratio of Mercury and Cadmium to "tune" the bandgap energy G L Hansen J L Schmidt T N Casselman J Appl Phys 53(10) 1982 p 7099 5 3 HgCdTe crystal is grown by MBE on CdZnTe Substrates Eg 2 1 10 35 ___ 5