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)