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Lightweight Internal Device to Measure Tension in Hollow- Braided Cordage
System, Apparatus, and Method for Pedal Control
Dust Tolerant Connectors
Foldable and Deployable Power Collection System
Iodine-Compatible Hall Effect Thruster
Development of a Novel Electrospinning System with Automated Positioning and Control Software
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Generating Broadband Terahertz Radiation from Microplasma in Air

Researchers at the University of Rochester’s Institute of Optics have shown that a laser-generated microplasma in air can be used as a source of broadband terahertz radiation. Fabrizio Buccheri and Xi-Cheng Zhang recently demonstrated that an approach for generating terahertz waves using intense laser pulses in air – first pioneered in 1993 – can be done with much lower power lasers, a major challenge until now.

Posted in: Articles, Briefs

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Enhancing Neutron Imaging with Grazing Incidence Optics

Marshall Space Flight Center, Alabama A low-cost optical element was developed specifically for neutron optics applications. The technology operates as a reflective lens — similar to proven grazing incidence optics used for x-ray imaging — and improves neutron imaging resolution for applications using low-energy (<1 electron volt) neutrons.

Posted in: Briefs, Optics

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Motion Blur Evaluation Techniques

These techniques model human sensitivity to moving spatial patterns to evaluate and improve display performance. Ames Research Center, Moffett Field, California Motion blur results when a moving edge travels across a display, such as a liquid crystal display (LCD), that has limited temporal response. It is important to be able to quantify this effect in visual terms. The techniques described in this work provide methods for estimating the strength of the motion blur artifact in perceptual units of JNDs (just noticeable differences).

Posted in: Briefs, Optics

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Illuminating Permanently Shadowed Lunar Regions Using a Solar Sail

NASA’s Jet Propulsion Laboratory, Pasadena, California Sunlight can be reflected into permanently shadowed regions (PSRs) using S/C solar sails in order to detect and confirm the presence and distribution of water ice cold-trapped in PSRs in lunar polar craters. This reflected light is then viewed with an optical spectrometer.

Posted in: Briefs, Optics

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UV-VIS Micro-Spectrometer

Hamamatsu Corporation (Bridgewater, NJ) has announced the release of the C12666MA microspectrometer, a UV-VIS spectrometer about the size of a fingertip. Its miniature components, fabricated using MEMS (micro-electro-mechanical systems) technology, allow it to be a fraction of the size of traditional spectrometers. In addition, its hermetically sealed package makes it usable in high-humidity environments that traditional spectrometers do not tolerate well.

Posted in: Products, Photonics

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310 nm, sub 800 ps Picosecond Pulsed LED

Edinburgh Instruments (Livingston, UK) has released a 310 nm picosecond pulsed LED with a sub-800 picosecond typical pulse width. This LED is optimized for Time Correlated Single Photon Counting (TCSPC). The EPLED 310 is a compact, robust, maintenance free, fully integrated system supplied in a single package. It is pre-adjusted for an optimum pulse width of

Posted in: Products, Photonics

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UV-Visible-NIR Polarization Spectroscopy

CRAIC Technologies (San Dimas, CA) recently announced the addition of UV-visible-NIR polarization spectroscopy capabilities to CRAIC microspectrophotometers. This feature is offered as a package that allows the user to measure polarization spectra in either transmission or reflectance modes. With the ability to measure polarization microspectra™ in the ultraviolet, visible and near infrared regions, the UV-visible- NIR polarization package represents a powerful new tool for both materials science and biological research.

Posted in: Products, Photonics

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