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The proposed innovation is based on a combination of two new technologies developed at the Center for Laser Technology at the Fraunhofer Institute and OptiGrate Corp. and aims to integrate advanced packaging of single emitter laser diodes, spectral and angular narrowing of these diodes by volume Bragg gratings in external resonators, and spectral combining of laser beams by a stack of volume Bragg ...

The Defense Advanced Research Program Agency (DARPA) is currently seeking a small semi-autonomous, very high speed maritime surface munition that is capable of speeds of 100 knots or greater in sea state 4 or above. The system must have the capability to track, differentiate and intercept a target such as a small high-speed watercraft , at an initial range of up to three miles at high speed while ...

Current refrigerant pumping technology lacks the ability to circulate a liquid-vapor mixture with substantial flow resistance, which impedes development and implementation of two-phase cooling technology. Common pump designs will hydro-lock and mechanically fail instantly or suffer performance loss and eventually fail due to cavitation or worn components. Mainstream"s solution is based on an exi ...

The capability of separating and localizing intermixed sounds in an auditory scene, also known as auditory scene analysis is the ear"s ability to handle the cocktail party effect. There are no useful models that emulate this holy grail of auditory research. Fourier-type theory and computational auditory scene analysis (CASA) techniques do not fully explain how the biological ear is able to"hear ev ...

THE SOL-GEL PROCESS ALLOWS FOR THE PREPARATION OF POROUS, SILICA OPTICAL COMPONENTS, TERMED TYPE VI SILICA. A NOVEL POTENTIAL APPLICATION FOR TYPE VI SILICA IS PROPOSED IN WHICH THE POROUS MATRIX IS USED AS A SUBSTRATE FOR THE FABRICATION OF MICRO-OPTICAL COMPONENTS. THE POROUS NATURE OF THE MATERIAL ALLOWS LASER-ENHANCED DENSIFICATION FOR THE PRODUCTION OF PLANAR OPTICAL WAVEGUIDES AND MICRO-OPTI ...

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