Award Data

The feasibility of novel refractive surgeries has been demonstrated using sub-picosecond laser pulses. However, the introduction of these techniques depends on the development of low cost, reliable, compact laser devices. We propose to design, construct and test a directly diode-pumped Nd:Glass laser system consisting of a prismless oscillator, a single transmission grating stretcher-compressor, ...

In vitro expansion of hematopoietic cells finds many applications in the clinic. This technique hasexpanding CD34+ cells for transplantation/re infusion, although most of the technology has consistedcultures in which there is variable CFUGM expansions and failure to maintain LTC IC (long term cultuThe Investigators have found that perfusion cultures of bone marrow mononuclear cells result in expaC ...

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As an alternative to holographic laser radar, AMPS will develop a 3-D imaging concept that collects far-field intensity speckle patterns. This kind of measurement greatly relaxes the tolerances on vibration and coherence length. However, phase retrieval will be required to retrieve a 3-D image. Phase retrieval algorithms typically utilize some type of prior knowledge about the object. In industria ...

The small spacecraft power system proposed in this program provides significant advantages over state-of-the-art systems including: (1) use of a high efficiency (25%-35%) AMTEC, static power conversion system, (2) reduced planform area, and vulnerability, (3) mass efficient phase change material for thermal energy storage during solar eclipse periods, (4) high reliability with no vibration, (5) si ...

Alkali Metal Thermal to Electric Converters (AMTEC) convert heat to electricity at high efficiency without moving parts at temperatures compatible with current solar receiver technology. A Phase I program is proposed which will deliver an integrated, high-temperature thermal storage/high-efficiency AMTEC cell system concepts and a small-scale thermal energy storage (TES) test article for material ...

Spatial light modulators are the limited component of optical signal processors. Electronic modulators, including liquid crystals and magento-optic modulators, are expensive, low resolution, and slow. The optical disk offers high resolution at moderate cost. The "pixel" size is on the order of one micron. The total system works to this accuracy by using an active feedback controlled system for ali ...

We propose a system to determine object attitude from special video imagery taken from two locations, with an image analysis system based on the Fourier Transform, which provides the spatial power spectrum of the image. The Fourier transform of an image represents the information in terms of angles and spatial frequencies. In this case we are interested only in the angles. The transform of a mis ...

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