Award Data

The applicant will develop a wave energy harvesting system for NOAA buoys. It will ve entirely self-contained (no protruding elements), modular, scalable, and easily deployed. The system employs a unique, inertial mechanism that responds to acceleration forces created by waves. This mechanism will be combined with (1) a proprietary generator that is sensitive to very low levels of torque and ha ...

Active defects negatively impact the performance of IRFPAs by increasing noise at various levels up to, and including, catastrophic degradation. Evidence indicates that"killer defects"are related to the interaction of open core screw dislocations with impurities that remain after substrate preparation, prior to HgCdTe growth. This impurity diffusion creates a conducting channel that shorts the j ...

For HgCdTe infrared focal plane arrays fabricated on Si substrates, a model has recently been proposed to account for the disparity between the density of failed pixels and the density of dislocations that are present in the HgCdTe junction region. The model distinguishes between active and inactive dislocations and offers a hypothesis that dislocations are active only when they intersect particul ...

Silicon wafers oriented on (112) are the preferred substrates for deposition of mercury cadmium telluride layers by molecular beam epitaxy. Surface defects introduced during polishing of the wafers degrade the quality of the epitaxy and the performance of infrared detectors fabricated within these materials. We propose a process for reducing the density of the defects that are inherent in the si ...

The goal of this project is to develop an ultra low power (ULP), radiation hardened, reconfigurable analog-to-digital converter (ADC) in the 130nm Flexfet Independently Double Gated SOI CMOS process. Satellites include a large number of sensors which perform both generic system functions and specific mission needs. For these various sensors, the required resolution for the associated ADC may be ...

There is a need for a high-resolution two-dimensional focal plane array (FPA) with single photon sensitivity (SPS), pulse amplitude storage, and GHz bit rates that can record both the time (with 10 bits) from multiple returns from a single laser pulse. Such a system has the potential to significantly reduce LADAR size, weight, and power (SWAP) by alleviating the laser requirements. In this program ...

New, modular radiation hard [>300 kRad (Si)] ROIC designs are required to address the needs of planned ballistic missile defense system. Anticipating the needs for large formats, small pixel sizes, and multiple spectral bands, the features of an existing radiation-hard space imager ROIC will be used to develop the design of an extensible 1024 × 1024, 15-μm pixel ROIC design. The design includes ...

Future seekers of the future will need to allow for multiple targets and various advanced countermeasures, likely including a dual-mode component to do so. A Dual Mode Seeker (DMS) has at least an infrared (IR) Focal Plane Array (FPA) as well as an active means to capture target range and preferably 3-D imagery. Future technology insertion will benefit from a monolithic dual mode focal plane, wher ...

A back-illuminated planar InGaAs photodiode tested to have 95% quantum effiiency (QE) at 1550 nm, area greater than 1 mm2, low capacitance (125 MHz) will be improved. Although the existing Phase I device exhibited bulk material dark current generation better than commercially available devices, the sidewall-generated dark current was found to dominate the noise equiva ...

A 128 x 128-format avalanche photodiode (APD) focal plane array (FPA), including a low-power dual-mode readout integrated circuit (ROIC) and low excess noise, high gain (M>1,200) will be developed for laser radar (LADAR) applications requiring reduced SWAP. The FPA gives LADAR seekers an advanced active tracking sensor capability, providing a sufficiently wide field of regard (FOR) to eliminate th ...