Photonics

Future Advances in Electronic Materials and Processes - Flexible Hybrid Electronics

There are still significant obstacles to the manufacture and use of flexible hybrid electronics in military applications.
Posted in: Briefs, Aerospace, Defense, Electronic Components, Electronics, Electronics & Computers, Power Management, Power Supplies, Materials, Photonics, Semiconductors & ICs, Sensors
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Energy Harvesting for Soft-Matter Machines and Electronics

A new class of soft multifunctional materials could be used to convert mechanical deformation from vibrations and stretching into electrical energy.
Posted in: Briefs, Aerospace, Energy, Energy Harvesting, Imaging, Composites, Materials, Metals, Optical Components, Optics
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Spatiotemporal Imaging Exploiting Structured Sparsity

Spatiotemporal imaging contains a large class of imaging problems, which involve collecting a sequence of data sets to resolve both the spatial and temporal (or spectral) distributions of some physics quantity. This capability is exploited in numerous different fields such as remote sensing, security surveillance systems, astronomical imaging, and biomedical imaging. One typical example is hyperspectral imaging, which is a powerful technology for remotely inferring the material properties of the objects in a scene of interest. Ultrasonic and thermal imaging are other important examples of spatiotemporal imaging where high spatial resolution is needed for urban planning, military planning, intelligence and disaster monitoring and evaluation.

Posted in: Briefs, Aerospace, Data Acquisition, Defense, Cameras, Imaging, Optics, Data Acquisition, Sensors
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Ultrafast Optics: Vector Cavity Lasers — Physics and Technology

Fiber lasers have found widespread applications in industrial material processing, scientific research and military systems due to their advantages of easy maintenance, excellent stability, compact size and low cost. One characteristic of fiber lasers, compared to other types of lasers, is that strong light is confined to propagating a long distance in a fiber core that has a very small cross-sectional area. This has the consequence that the nonlinear light interaction with the matter has a very long length. This results in the strength of all nonlinear optical processes being strongly amplified. This means that a conventionally weak, nonlinear optical effect can become significant. Therefore, apart from the practical applications, fiber lasers also constitute an ideal platform for the exploration of various complex nonlinear dynamics.

Posted in: Briefs, Aerospace, Defense, Fiber Optics, Lasers & Laser Systems, Optical Components, Optics, Photonics
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Integration of Adaptive Optics Into High-Energy Laser Modeling And Simulation

The U.S. Navy is constantly predicting future threats and contemplating new weapon technologies to counter them. One of those technologies is directed-energy (DE) weapons. Conventional weapons rely on the kinetic energy of projectiles. High-energy lasers (HELs), one type of directed-energy weapon, work in a fundamentally new way, using electromagnetic radiation to damage or destroy enemy assets.

Posted in: Briefs, Aerospace, Defense, Lasers & Laser Systems, Optics, Photonics, Simulation Software, Software
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3D Meta-Optics for High-Energy Lasers

The scope of this research radically changed the way novel components are designed and fabricated for high-energy applications. This 3D Meta-Optics platform was, and is, essentially engineering the electromagnetic fields in 3D dielectric structures. The results have provided a class of transformational optical components that can be integrated at all levels throughout a high-energy laser system.

Posted in: Briefs, Aerospace, Defense, Manufacturing & Prototyping, Materials, Lasers & Laser Systems, Optical Components, Optics, Test & Measurement
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Nominal High-Altitude Electromagnetic Pulse (HEMP) Waveforms

Predictions of these signals were difficult to make due to the complexity of the physics unleashed by the detonation.
Posted in: Briefs, Aerospace, Defense, Photonics, RF & Microwave Electronics, Instrumentation, Measuring Instruments, Test & Measurement
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Localization and Mapping of Unknown Locations with Unmanned Ground Vehicles

The main goals of this research are to enhance a commercial off-the-shelf (COTS) software platform to support unmanned ground vehicles (UGVs) exploring the complex environment of tunnels, to test the platform within a simulation environment, and to validate the architecture through field- testing.

Posted in: Briefs, Aerospace, Defense, Batteries, Cameras, Lasers & Laser Systems, Photonics, Automation, Robotics, Data Acquisition, Sensors, Simulation Software, Software, Transportation
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Simulation of Active Imaging Systems

Active imaging systems offer the promise of significantly improved tactical performance compared to passive military systems operating in adverse ground, air, and underwater/ maritime environments. These improvements would include, but are not limited to:

Posted in: Briefs, Aerospace, Data Acquisition, Defense, Imaging, Lasers & Laser Systems, Simulation Software
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Novel Characterization Methods for Anisotropic and Mixed-Conduction Materials

State-of-the-art electronic and optoelectronic devices require electronic materials with specialized properties that cannot be characterized with standard methods, or that must be characterized with extra precision. As a result of this research, the following new materials characterization methods have been developed:

Posted in: Briefs, Aerospace, Computers, Electronics, Electronics & Computers, Photonics
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