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Articles Photonics/Optics
Laser-Based System Could Expand Space-to-Ground Communication
A new research project announced recently as a collaboration between the Georgia Institute of Technology and satellite communications provider Xenesis could help open the bottleneck...
Application Briefs Photonics/Optics
Optical Seeker for Munitions Systems
BAE SystemsNashua, NH603-885-4321www.baesystems.com The U.S. Defense Advanced Research Projects Agency (DARPA), through the U.S. Air Force Research Laboratory, has awarded BAE Systems a $13.1 million...
Briefs RF & Microwave Electronics
Co-Prime Frequency and Aperture Design for HF Surveillance, Wideband Radar Imaging, and Nonstationary Array Processing
A co-prime array uses two uniform linear subarrays to construct an effective difference coarray with certain desirable...
Articles Materials
Taming the Thermal Behavior of Solid-State Military Lasers
Laser diodes and laser diode arrays (LDAs) are widely used throughout military systems, for sighting and range finding, but also at high power levels as offensive and defensive weapons....
Application Briefs Data Acquisition
Autonomous Helicopters
Northrop Grumman CorporationFalls Church, VA+1 703-280-2900www.northropgrumman.com/firescout Fire Scout is a combat proven, autonomous helicopter system that provides real-time Intelligence, Surveillance, Reconnaissance,...
Briefs Transportation
GPS Enabled Semi-Autonomous Robot
The primary objective of this research is to integrate GPS and local sensory data to allow a robot to operate semi-autonomously outside of a laboratory environment. The Pioneer 3-AT, a robust platform capable...
Application Briefs Photonics/Optics
Robotic Paint Removal System
Air Force Research LaboratoryWright-Patterson Air Force Base, OH+1 937-255-0017www.wpafb.af.mil AFRL Materials Integrity engineers recently played a key role in enabling the safer and more efficient removal of paint...
Articles Sensors/Data Acquisition
Laser Detecting Systems
Whether engaged in an asymmetric fight with an insurgent or a conventional battle with a “near-peer” adversary, today's battlefield presents combatants with significant challenges. Rapidly advancing technology and...
Application Briefs Propulsion
Customizable Rocket Launchers
Arnold DefenseArnold, MO(636) 296-5417www.arnolddefense.com Arnold Defense, an international manufacturer and supplier of 2.75-inch rocket launchers, has been generating considerable interest in its new,...
Articles Communications
Communications in Space: A Deep Subject
Transmitting and receiving radio signals between spacecraft in deep space is a snap compared with getting those signals back to Earth, especially when the spacecraft is 120 billion miles away.
Briefs Sensors/Data Acquisition
Phonon Confinement Effect in TiO₂ Nanoparticles as Thermosensor Materials
TiO2 or ZnO nanoparticles (NPs) have a very strong finite-size dependency in their Raman spectra or photoluminescence (PL) spectra due to the phonon confinement effect...
INSIDER Photonics/Optics
Army Aviators Test Next Generation Air-to-Ground Missile
Aviation testers have been busy testing the latest Army aviation missile, known as the Joint Air-to-Ground Missile (JAGM). The complex JAGM test was a collaborative team effort...
INSIDER Defense
Air Force Research Lab and Industry Advance Multi-Junction Solar Cells
Experts at the Air Force Research Laboratory (AFRL) continue to expand the scope of their technological expertise, rising above the Earth’s surface to meet the power...
Briefs Sensors/Data Acquisition
Using Ground Sensors to Defend Aircraft Against Laser Strikes
A growing safety concern for pilots and aircraft passengers is laser strikes, or the aiming of high-power laser pointers at aircraft. To address the present lack of effective laser...
INSIDER Defense
Army Developing Lasers That Pierce Fog, Dust to Destroy Targets
A lot of people think that high-energy lasers, or HELs, can't penetrate fog, rain and dust, said Thomas Webber, director of the Directed Energy Division's Technical Center,...
Articles Photonics/Optics
Identifying and Isolating Signals Using Radio Frequency Photonics
A single antenna can be used for both transmission and reception. To accomplish this, the transmission must be isolated from the reception. In Figure 1, a radio frequency...
Application Briefs Defense
Joint Effects Targeting System
U.S. Army Operational Test CommandFort Hood, TX254-287-9993www.otc.army.mil Forward observers, experts in directing artillery and mortar fire onto enemy targets, have been testing a new piece of targeting...
INSIDER Defense
Researchers Show How Fear Memories Can Be Erased
Researchers at the University of California, Riverside have devised a method to selectively erase particular fear memories by weakening the connections between the nerve cells (neurons)...
Articles Photonics/Optics
Scaling LiDAR Optical Payloads from Drones to Miniature UAVs
The recent surge in demand for adaptive cruise control (ACC) and commercial autonomous vehicles has drawn a lot of attention to these innovative applications. Based on pulsed laser...
Application Briefs Defense
Missile Test System
Marvin Test SolutionsIrvine, CA949-263-2222www.MarvinTest.com The Indonesian Air Force recently selected Marvin Test Solutions’ MTS-206A Maverick Field Test Set and MTS-916-3 Modular Target Simulator to support testing of...
Briefs Photonics/Optics
High-Power Broadband Multispectral Source on a Hybrid Silicon Chip
For applications in manufacturing, remote sensing, medicine, military, and fundamental science, an ideal laser would have high output power and a diffraction-limited beam. The...
Briefs Photonics/Optics
Stimulated Brillouin Scattering (SBS) Suppression and Long Delivery Fibers at the Multikilowatt Level with Chirped Seed Lasers
One obstacle in the scaling of high-power fiber lasers arises because of nonlinear effects (e.g., stimulated...
Briefs Photonics/Optics
Erbium Doped GaN Lasers by Optical Pumping
The main objective of this research was to construct an optical pump system that would allow the study of Er:GaN materials under 980 nm resonant excitation to be carried out. The results obtained from...
Briefs Photonics/Optics
New Class of Excimer-Pumped Atomic Lasers (XPALS)
The focus of this research program was the investigation of XPAL properties, and new pumping schemes, as well as modeling, and measuring critical photoionization and excited state-excited state...
Briefs Photonics/Optics
Laser Integration on Silicon Photonic Circuits Through Transfer Printing
The purpose of this project was to develop a transfer printing process for the massively parallel integration of III-V lasers on silicon photonic integrated circuits....
Briefs Photonics/Optics
High Energy Computed Tomographic Inspection of Munitions
An advance computed tomography (CT) system was recently built for the U.S. Army Armament Research, Development and Engineering Center, Picatinny Arsenal, NJ, for the inspection of...
Briefs Photonics/Optics
Development of Photoacoustic Sensing Platforms
In recent years, photoacoustic spectroscopy (PAS) has emerged as an attractive and powerful technique well suited for sensing applications. The development of high-power radiation sources and more...
INSIDER Defense
Mobile High-Energy Laser Shoots Down Drones
A Stryker combat vehicle equipped with a 5kW laser and an array of sensors spent several minutes scanning the horizon for a wayward "enemy" drone. On a television screen in a nearby tent off...
Briefs Defense
Luminescence Materials as Nanoparticle Thermal Sensors
The purpose of this research program was to create and study novel luminescence particles (phosphors} capable of sensing and retaining the time-temperature information to which they were...
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