Optics, Photonics, & Lasers

Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio Aprogram of research has addressed multiple topics in the design, development, characterization, and utilization of new...

A proposed high-gain free-electron laser (FEL) amplifier, conceived primarily for use in a maritime environment, would be capable of average output power of the order of a megawatt at...

Aminiaturized Global Positioning System (GPS) antenna array is being developed for use on aircraft on which the room available for installation of this or any other equipment is...

A n apparatus that includes two optical parametric chirped pulse amplification stages has been built as a means of generating few-cycle, common-envelope (CE)-phase-stable,...

Fiber-optic lasers of a proposed type would serve as sources of coherent radiation at frequencies between 0.5 and 4.0 THz and output power levels ≥100 mW. In the original application...

Briefs: Photonics/Optics
Research on Quantum Communication Repeaters

A program of research during the years 2001 through 2006 was devoted to building theoretical and practical foundations for the development of quantum repeaters as means of overcoming losses of photons in long-distance quantum communication systems. The idea underlying this research was to investigate...

Briefs: Photonics/Optics
Optical-Fiber Infrasound Sensors

Optical-fiber infrasound sensors (OFISs) are being developed for detecting acoustic pressures in the frequency range from a few millihertz to a few hertz. As explained below, these sensors were conceived to...

Astudy has been performed to establish a foundation for the analysis, design, and further development of inplane- actuated deformable membrane mirrors for lightweight spaceborne...

As unmanned vehicles get smaller and smaller, operational expectations and mission objectives demand a much broader array of platform capabilities — a necessity even with reduced...

Briefs: Photonics/Optics
Photonic Analog-to-Digital Converters

Early steps have been taken toward the development of analog-to-digital converters (ADCs) that would incorporate photonic quantizers based on the technology of InP semiconductors. These photonic ADCs are intended to overcome the sampling speed and temporal resolution limitations of state-ofthe- art...

Several analog-to-digital converter (ADC) devices and part of a multispectral receiver have been designed, fabricated, and tested to demonstrate their feasibility as part of an...

A n infrared data link between a ground station and a small uninhabited helicopter in flight has been demonstrated in an effort to develop a type of system for free-space optical...

Briefs: Photonics/Optics
Continuous-Wave Atom Laser

Progress has been made toward realization of a continuous-wave, phase-andamplitude- stable atom laser based on magnetic guiding, magnetic compression, and continuous distributed evaporative cooling of a sparse...

Briefs: Photonics/Optics
Adaptive Optoelectronic Eyes

Aprogram of research has built a technological foundation for further development of systems that could be characterized, variously, as "smart" cameras or adaptive optoelectronic eyes. A system according to this...

A program of research and development has been directed toward the goals of demonstrating (1) ultra-low-noise communication links in which information is conveyed by phase-modulated...

Stressed-liquid-crystal (SLC) light-modulating devices suitable for use as liquidcrystal- on-silicon (LCOS) spatial light modulators (SLMs) that could operate in nearand mid-infrared...

Astudy has been undertaken to evaluate a method of detecting change in a three-dimensional (3D) terrain map generated from data acquired by an imaging ladar system carried aboard a moving...

The US Air Force has a need for improved tunable laser sources—both in the midinfrared region, for developing infrared countermeasure (IRCM) applications, and in the...

Perfect information- theoretical security requires that the meaning of an encrypted message transmitted from point A to point B be statistically independent of the ciphertext in which that message...

Briefs: Photonics/Optics
Dynamic Cavity Formation Imaging

When an Air Force bomber drops a penetrating munition, what happens as the warhead travels underground to the target? AFRL researchers at the Advanced Warhead Experimentation Facility (AWEF) recently captured...

Laser diodes are an integral part of everyday life, incorporated into commonplace items as diverse in function as laser pointers, fiber-optic communications systems, and DVD players....

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