Award Data

Microwave Technologies Incorporated is proposing the development of a very compact radio-frequency (rf) electron beam accelerator which appears to be well-suited for BMDO's directed energy applications. This novel concept employs a single short rf cavity operating in circular polarization to accelerate a low-energy ma ~netized pencil beam to energies that range from 2 to 10 MeV. The proposed accel ...

This proposal describes a fabrication-intensive program to determine the feasibility of fabricating oxide vertical-cavity surface-emitting lasers (oxide VCSELs) whose unoxidized current apertures comprise lateral oxidation barriers. Although oxide VCSELs have spectacular performances (50% wallplug efficiency, etc.) their manufacturability is questionable since the oxidation process forming the cur ...

This proposal describes a program to determine the feasibility of forming an entirely new class of optical structures: wide-angle resonant cavities (WARCs). A WARC-structured light emitting diode would have "laser-like" high efficiency and modulation speeds. A WARC-structured vertical cavity laser would have low threshold currents and extremely high speeds. The device characteristics sought are si ...

This proposal describes an experimental program to determine the feasibility of fabricating long-wavelength (>1.3um) oxide vertical-cavity surface-emitting lasers (VCSELs). It addresses the two most inhibiting difficulties in fabricating practical long-wavelength VCSELs: 1) Use of oxidized layers in the bottom mirror results in a mirror thickness reduction from ~7um to

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Combustion chemical vapor deposition (CCVD), which was invented by the principal investigator, is a high quality film deposition technique that can inexpensively and quickly apply lead zirconate-titanate (PZT) thin films in a continuos manner. This technology can be used for the production of ferroelectric capacitors. CCVD is low cost, high quality and versatile. It does not require a reaction cha ...

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Many optical computing problems are centered around the processing of incoherent images. These images may be conventional visible light such as those taken with a CCD imager or camcorder. They may also take the form of infrared images in the case of missle seekers or x-ray images from medical or other sources. For optical processing, these images must be converted to either phase or amplitude modu ...

The need for larger, faster and higher-resolution imager chips at low cost has become more acute as image processing and optical systems improve. However, monolithic imagers having large pixel numbers are fabricated with difficulty at low yield and high cost. This proposal is directed to defect correction for high resolution imagers, in the visible, IR and UV ranges, in order to dramatically incr ...

The quality and durability of coatings produced by virtually all thermal spray techniques could be improved by, among other things, increasing the velocity with which coatings particles impact the coated surface and by better control of the chemical and thermal environment seen by the particles during flight. A new and innovative approach to thermal spraying is proposed that can increase coating p ...