info@amethystresearch.net
info@amethystresearch.net
        
        We developed our extensive infrared technology know-how through 20 years of client-funded research (US government, UK government, private companies) and in-house R&D efforts. Many of the technologies in our portfolio stem from 60+ highly competitive government awards. We advance innovative technologies with commercial potential through:
Contract-based research (DOD & NASA contracts, Oklahoma Center for the Advancement of Science and Technology (OCAST), MoD contracts in the UK)
More exploratory, longer-term research (DOE & NSF grants, Innovate UK grants in the UK)
We achieve research results in collaboration with our partners & customers: research providers, manufacturers, other companies within the infrared supply chain, and systems integrators. With these interactions, our team develops the insights that lead us to deliver cutting-edge innovative technologies. We look forward to developing new technologies and solutions with you.
        
        (Al, Ga, In) (N, P, As, Sb)
Wide range of doping control (Te, Zn, etc.)
Substrates GaSb, InAs, InP, Si
        
        
        
              There are many detector types corresponding to several important
              applications of infrared sensing.
Here are prominent detector
              types Amethyst Research staff are experts in:
            
                  Broadband response, low dark current for higher operating temperature or higher detectivity for infrared imaging, gas sensing, security, communications, medical imaging, and more
                  Heightened response within a narrow band for maximum sensitivity for environmental monitoring, security and medical applications, spectroscopy
                  
                      Sophisticated structures 
for low light level
                      detection
                      for telecommunications
                        medical imaging, environmental monitoring, security
                      
                    
                  A special case of APD useful for detecting single photons in a time-resolved way for quantum optics, quantum communications
                  Large arrays of mid-infrared emitters are needed for infrared scene projector
                           Technology:
Performance MWIR and LWIR RCE-PDs with a ~50 times
                            reduction in absorber volume.
                        
                           Goal: 
Sensing of several important medical and
                            environmental gases including CO2, CH4, N2O, acetone
                            and glucose.
                        
                             Customer:
European Commission (ATTRACT)
                          
                           Technology:
Paired resonant cavity LED and RCE-PD at 4.472
                            microns for detection of N2O.
                        
                           Goal:
Greater resolution and lower cost in subsurface gas
                            concentration measurements, leading to more accurate
                            parameters for more accurate modeling of complex
                            subsurface systems.
                        
                             Customer:
US Department of Energy 
                          
                           Technology:
RCE-PD at 3.31microns, compatible with single-pixel
                            camera imaging, for methane detection in the MWIR
                            band.
                        
                           Goal:
High sensitivity, low power, and lightweight imager
                            for UAV’s and handheld systems to boost the scope of
                            methane source mapping.
                        
                             Customer:
US Department of Commerce
                          
                           Technology:
LWIR RCE-PD (9.3 microns), paired with a sourced
                            Quantum Cascade Laser (Pranalytica) capable of ~ GHz
                            bandwidth.
                        
                           Goal:
Free-space links using the LWIR band, where
                            atmosphere absorption and scattering are weak, for
                            secure communications.
                        
                             Customer:
US Department of Defense (Air Force)
                          
                           Technology:
Sensor system for subsurface CO2 isotopologue
                            discrimination, incorporating broadband, low-dark
                            current nBn detector optimized for 4.36 microns.
                        
                           Goal:
Low cost and accurate tool to support Monitoring,
                            Verification, and Accounting in
                            sequestration.
                        
                             Customer:
US Department of Energy
                          
                           Technology:
nBn detector on GaSb with absorber composition
                            optimized for 2.0-2.5 microns (e-SWIR transmission
                            band).
                        
                           Goal:
Improved detectors for important e-SWIR
                            applications such as imaging with nightglow, seeing
                            through smoke/haze with less scattering, and
                            spectroscopy.
                        
                             Customer:
US Department of Defense (Army)
                            
                          
                           Technology:
nBn detector with highly manufacturable III-V
                            materials, enhanced by hydrogenation and designed
                            for cutoff wavelengths of 2 to 5 microns.
                        
                           Goal:
Infrared detectors with reduced cooling
                            requirements to bolster orbital and in situ
                            compositional analysis and mapping in future
                            planetary missions.
                        
                             Customer:
National Aeronautics and Space Administration
                              (NASA)
                            
                          
                           Technology:
Octave-spanning (3-6 micron), GHz-bandwidth,
                            thermoelectrically cooled nBn detector with high
                            sensitivity (Noise Equivalent Power <
                            1pW/Hz^1/2).
                        
                           Goal:
Step-function increases in speed and sensitivity
                            for portable, mid-infrared comb spectroscopy
                            systems, within the SCOUT (Spectral Combs from UV to
                            Terahertz) program.
                        
                             Customer:
US Department of Defense (Defense Advanced
                              Research Projects Agency)
                          
                           Technology:
GaAs and InP-based SPADs as a pathway for high
                            volume scale-up of discrete components, monolithic
                            integration and a pathway for multi-functional
                            Quantum Photonic Integrated Circuits (QPICs).
                        
                           Goal:
Improve epitaxial material deposition, fabrication
                            uniformity and reliability.
                        
                             Customer:
Innovate UK (QFoundry project)
                          
                           Technology:
SPAD at a telecom wavelength, InGaAs and GaSb based
                            and having > 100 MHz bandwidth, for integration with
                            an AlGaAs-on-insulator entangled photon source (U.
                            California, Santa Barbara).
                        
                           Goal:
Disruptive component for emerging
                            ground-to-satellite and satellite-to-satellite
                            quantum encrypted communications and distributed
                            quantum sensing.
                        
                             Customer:
National Aeronautics and Space Administration
                              (NASA)
                          
                           Technology:
Low-loss infrared Ultrawide Type II Hyperbolic
                            metamaterials based on heavily doped InAs and
                            dry-etched into 1D square gratings with a period
                            shorter than 5µm.
                        
                           Goal:
Use III-V metamaterials as a low-low plasmonic
                            material that can be integrated with traditional
                            III-V infrared devices such as photodetectors and
                            photoemitters at a large scale.
                        
                             Customer:
US Department of Defense (Undersecretary Office)
                            
                          
                           Technology:
Integrated flat micro-lens arrays for III-V
                            infrared detectors to provide light concentration in
                            SWIR and MWIR.
                          
                        
                           Goal:
Improve detector performance by increasing signal
                            for a given noise level, including enabling smaller
                            diameter detectors that have higher bandwidths.
                        
                             Customer:
Oklahoma Center for Science and Technology
                              (OCAST)
                          
                           Technology:
Tunable (MWIR, LWIR) Type-II Superlattice LED
                            structures by heteroepitaxy on GaAs or Si.
                        
                           Goal:
Affordable, high-power LED arrays with a high
                            dynamic range (versus resistor arrays), capable of
                            large areas and on a substrate with good heat
                            dissipation, as core components of scene projection
                            systems for infrared imager testing.
                          
                        
                             Customer:
US Department of Defense (Air Force)
                          
                           Technology:
Resonant cavity Light-emitting diodes for infrared
                            gas spectroscopy. 
                        
                           Goal:
Use RC-LEDs to replace costly Quantum cascade
                            lasers (QCL) typically used for infrared gas
                            spectroscopy systems. Demonstrate their use for
                            environmental gas monitoring (N2O and other).
                        
                             Customer:
US Department of Energy
                            
                          
                           Technology:
Marshaling a suite of ion beam methods (Elastic
                            Recoil Detection Analysis for H, Nuclear Reaction
                            Analysis for C and O, Particle Induced X-ray
                            Emission for mineral composition, and ion beam
                            Induced Luminescence) for quantification of C, H,
                            and O in shale.
                        
                           Goal:
More efficient and integrated characterization of
                            shale to support oil and gas exploration.
                        
                             Customer:
US Department of Energy
                            
                          
                           Technology:
Deuterium tagging for mapping of point defects of
                            CdZnTe (CZT) substrates.
                        
                           Goal:
In-process inspection tool for correlating crystal
                            growth and wafer processing methods with defect
                            types and concentrations, to improve the operability
                            and yield of focal plane arrays grown on CZT.
                        
                             Customer:
US Department of Defense (Missile Defense
                              Agency)
                          
                           Technology:
Passivation of dislocation defects by hydrogenation
                            of HgCdTe on silicon.
                        
                           Goal:
Improve the performance of HgCdTe on silicon in the
                            LWIR region by reducing and/or electrically
                            neutralizing the defects originating at the
                            substrate/epilayer interface.
                        
                             Customer:
US Department of Defense
                            
                          
                           Technology:
Photon-assisted hydrogenation process technology of
                            HgCdTe Infrared Detectors.
                        
                           Goal:
Improve the operability and performance of HgCdTe
                            NIR avalanche photodiode arrays to lower the
                            manufacturing costs of HgCdTe detectors.
                        
                             Customer:
National Science Foundation (NSF)