Abstract:DESCRIPTION (provided by applicant): The specific aim of this proposal is to determine if it is feasible to use a polymer-coated shaft in placed of a precision-machined roller die for the purposes of producing braille and tactile graphics. If successful, this project will result in the selection… more
Abstract:NASA has a requirement for a large-area, high-quantum-efficiency, high-throughput optical receiver for ground-, air-, and space-based LIDAR systems. A radiation-hardened direct detection analog LIDAR receiver will be developed to address this need in the proposed STTR program. The rad-hard LIDAR… more
Abstract:Existing photocathode-based technologies for visible and UV instruments lack sensitivity, are bulky, and have limited reliability. Solid-state silicon photomultipliers (SiPMs) are efficient, light, and reliable, but the front-illuminated designs demonstrated to date have poor UV response, limited… more
Abstract:A radiation hard, single photon sensitive InGaAs avalanche photodiode (APD) receiver technology will be demonstrated useful for long range space based optical telecommunications in the spectral range from 1000 to 1600 nm. The innovation is based on a linear mode (lm) single photon sensitive APD… more
Abstract:High-performance radiation-hardened metamorphic InGaAs imaging arrays sensitive from the ultraviolet (UV) through the short-wavelength infrared (SWIR) will be developed. The proposed detector arrays will offer near-BLIP sensitivity, with R0A values comparable to HgCdTe detectors, but with superior… more
Abstract:High-performance HDTV cameras are commercially widespread, but are not presently available in radiation-hard versions. The objective of the proposed SBIR effort is to develop and commercialize a radiation-hard, high-performance HDTV sensor for NASA missions and other space-based and high-energy… more
Abstract:There is a need for developing a high-performance single photon avalanche photodiode (SPAD) detector array design, which can be fabricated using a domestic, high-volume commercial CMOS process on 200mm or greater wafers. Many of todays silicon photomultiplier (SiPM) devices are fabricated using… more
Abstract:Silicon photomultipliers (SiPMs) have recently gained considerable interest as replacements for photomultiplier tubes. Like photomultiplier tubes, they are capable of measuring extremely low light levels, to the point of being able to detect single photons. However, compared to photomultiplier tubes… more
Abstract:Electricity generation processes burn fossil fuels, generating heat that is then used to produce power in a series of efficiency-robbing mechanical steps. These processes are able to generate a large amount of power, but waste a staggering 50 to 60% of the available heat energy due to technology… more
Abstract:Planned science instruments require timeofflight (TOF) detectors with subpicosecond resolution, high count rates, and a large number (hundreds of thousands) of parallel channels. Timetodigital converters (TDCs) are effective for TOF measurement. With few exceptions, subnanosecond TDCs have been… more
Abstract:CMOS APS detectors have emerged as an attractive imaging solution to replace CCD technology. They can be very thin, yield good signaltonoise ratio (SNR) at room temperature, and offer the possibility of incorporating inpixel data processing. But despite its potential, APS has demonstrated relatively… more
Abstract:Domestic CMOS imager manufacturing technologies are attractive as a replacement for CCDs but do not yet meet all the requirements of scientific imagers. Their use in tailored scientific imaging applications is hampered by the large wafer sizes and high cost of deepsubmicron fabrication; the low… more
Abstract:To fully utilize thirdgeneration synchrotron sources, the Xray science community needs advanced detectors that are tailored to beamline science. Detectors are not yet available for the fastest bunch modes, and at the fastest operating modes, collection of multiple bunches is required, laser energy… more
Abstract:Flatpanel Xray detector technologies are desired to replace Xray film, but available detector materials have a number of limitations, such as low efficiency, low sensitivity, high noise, small format, high cost, long product development times, and/or expensive infrastructure. Directdetection… more
Abstract:ABSTRACT: Nanocrystals (NCs) offer many potential benefits for optical refrigeration; these quantum-confined materials have discrete energy levels, large optical transition dipole moments, and high photoluminescence quantum efficiency. Using well-characterized upconverting ion-doped metal oxide NCs… more
Abstract:Radiation-hardened, highly sensitive wavefront sensors (WFSs) with at least 256256 resolution and the capability for sustained operations at 10 kHz are necessary to support the high-speed control loops used for image stabilization and jitter suppression in MDA systems for airborne and spaceborne… more
Abstract:A flash LADAR camera will be designed and demonstrated in the Phase I program. After fabricating a series of high-gain, low-excess-noise, back-illuminated avalanche photodiode (APD) arrays, including 88, 3232, 128128, and 256256 formats, the arrays will be hybridized to one or more existing flash… more
Abstract:The most effective strategy to increase LADAR range performance while minimizing size, weight and power (SWAP) growth is to increase the sensitivity of the detectors used in the receiver. To address this need, a radiation-hard, 256256-format flash-LADAR receiver will be developed based on… more
Abstract:Advances in component technologies have enabled new classes of coherent LADAR systems that offer the potential for enhanced persistent space surveillance and asset protection. Their complex-valued images allow for imaging functions not possible with intensity-only images, including coherent… more
Abstract:The persistent surveillance infrared imaging systems deployed on USAF air- and space-borne platforms typically employ staring focal plane array (FPA) technology, which despite their large formats, have insufficient pixel bandwidth and frame rates to characterize small, energetic, fast-moving objects… more
Abstract:ABSTRACT: Tagging, Tracking, and Locating (TTL) using optical taggants is a powerful tool for locating modern military threats. While many taggant delivery systems have been conceived, few are practical. Large surface-to-volume ratios make nanoparticles difficult to work with as they tend to… more
Abstract:A high-resolution integrated multi-spectral sensor (MSS) will be developed that incorporates day and night vision, as well as multi-spectral laser spot imaging, into a single sensor package. Using existing extended-spectral-response InGaAs detectors, the responsivity performance of the InGaAs… more
Abstract:Voxtel proposes a high speed, asynchronous, photon counting receiver for active ranging by unmanned aerial systems (UAS). Sensitivity to single photons is desirable for a low size weight and power (SWAP) UAS-borne active ranging receiver because of the limited laser pulse energy that can be… more
Abstract:The Contractor will collect software and data analysis requirements during two sets of workshops with their domain expert collaborators. The first step in the project will be to define an initial high level design across all major software subsystems. Thishigh level design will be in power point… more
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