Award Data

In the proposed effort, we will leverage this extensive experience and capabilities to realize a frequency agile mmW radiometer that can cover the range of DC-110 GHz and can be scaled to DC-200 GHz under Phase II. Ours is a photonic system that multiplies and up-coverts a low-frequency reference signal onto an optical carrier (laser) using EO modulation, then uses the modulation sidebands to inj ...

The Defense Threat Reduction Agency (DTRA) and the U.S. Strategic Command Center for Combating Weapons of Mass Destruction (SCC-WMD) requires transformational materials technology to support the intelligence, surveillance, and reconnaissance (ISR) of personnel and materials associated with weapons of mass destruction (WMD) development, manufacturing, and proliferation. Voxtel, Inc. proposes to fa ...

An existing low-cost FPGA-based processing platform will be demonstrated with fiber-coupling to single-photon detectors, to perform photon-arrival time stamping with

A stable, well characterized InGaAs materials growth and photodetector fabrication process will be used to fabricate matched photodiodes optimized for balanced homodyne detection. The 1-mm-diameter p-i-n photodetectors will be manufactured back-illuminated with a 5-micron absorber, allowing residual light to reflect off the front-side metal to make a double pass through the active layer. Ultra-hig ...

Voxtel has demonstrated efficient high-speed photon counting with thresholded linear-mode avalanche photodiode (APD) receivers using multi-gain-stage InGaAs/InAIAs APDs. In contrast to Geiger APDs, thresholded photon-counting linear APD receivers are thought not to suffer afterpulsing, and can support maximum count rates (MCR) up to 2 or 3 orders of magnitude faster than Geiger APDs. However, the ...

A radiation-hard, 1064-nm sensitive, single-photon-sensitive avalanche photodiode (APD) detector with photon detection efficiency (PDE) and dark count rate (DCR) superior to state-of-the-art Geiger-mode APDs, and with two orders of magnitude faster maximum count rate (MCR) will be developed. Geiger APDs are constrained by a fundamental tradeoff between DCR and MCR: if the APD is cooled to reduce D ...

Multi-axis fiber grating strain sensors may be used to localize and qualitatively identify the degree of damage in composite parts. Signatures associated with delaminations and damage tow material are significantly different for strain imaging produced data. This Phase I project is directed toward improving the quantitative measurement capability of "strain imaging" methods through experiments, ...

Missile defense battle management is an inherently distributed process, involving sensors, weapons, and targets that are distributed over a region spanning thousands of miles. While most agents need some sense of "distant events", they neither need nor can afford detailed, high-fidelity models of the entire situation. CleverSet's approach to distributed battle management is based in variable reso ...

The objective of this research is prove the feasibility of automatically migrating radiation effects predicted in TCAD level tools to compact modeling tools. This transition will enable compact models that possess radiation effects to be quickly generated, which can then be used in circuit design activity. This "model-in-a-day" approach is a substantial improvement over the current ad hoc approach ...

The feasibility of using AlGaInAs avalanche photodiodes (APDs) operated in linear mode as high-frame- rate solid state wavefront and tracking sensor elements capable of detecting single photons will be established. The small contrast between electron and hole ionization coefficients in common III-V compound semiconductors like AlGaInAs would normally prohibit their use in photon-counting APDs owin ...