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How PCI Express Is Changing Machine Vision

PCI Express is the peripheral bus now being adopted by next-generation PCs, servers, and industrial computers. It provides a scaleable, high-bandwidth, point-to-point pathway between peripheral cards and the computing core while retaining application software compatibility with previous generations. For machine-vision systems, the architecture and higher bandwidth of PCI Express yield major increases in achievable frame rate and image size as well as simplifying the implementation of multi-channel capability.

Posted in: Articles

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Cold Atom Source Containing Multiple Magneto-Optical Traps

This source allows a smaller package relative to single-trap sources of similar performance. An apparatus that serves as a source of a cold beam of atoms contains multiple two-dimensional (2D) magneto-optical traps (MOTs). (Cold beams of atoms are used in atomic clocks and in diverse scientific experiments and applications.) The multiple-2D-MOT design of this cold atom source stands in contrast to single-2D- MOT designs of prior cold atom sources of the same type. The advantages afforded by the present design are that this apparatus is smaller than prior designs.

Posted in: Physical Sciences, Briefs

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Technology Business Briefs

Portfolio of Mobile Messaging Patents for Sale Four U.S. patents, several U.S. applications and a family of international counterparts are available. Reinforced Micromodule This technology relates to a reinforced micromodule of the kind for supporting an integrated circuit adapted here for use in combination with flexible, card-type, portable data carrier devices.

Posted in: Blog

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WGM-Resonator/Tapered-Waveguide White-Light Sensor Optics

Light patterns formed by these optics contain information on absorption spectra. Theoretical and experimental investigations have demonstrated the feasibility of compact white-light sensor optics consisting of unitary combinations of (1) low-profile whisperinggallery- mode (WGM) resonators and (2) tapered rod optical waveguides. These sensors are highly wavelength-dispersive and are expected to be especially useful in biochemical applications for measuring absorption spectra of liquids.

Posted in: Physical Sciences, Briefs, TSP

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Raman-Suppressing Coupling for Optical Parametric Oscillator

Loading of desired modes is reduced, relative to loading of undesired modes. A Raman- scattering- suppressing input/ output coupling scheme has been devised for a whispering-gallery- mode optical resonator that is used as a fourwave- mixing device to effect an all-optical parametric oscillator. Raman scattering is undesired in such a device because (1) it is a nonlinear process that competes with the desired nonlinear four-wave conversion process involved in optical parametric oscillation and (2) as such, it reduces the power of the desired oscillation and contributes to output noise.

Posted in: Physical Sciences, Briefs, TSP

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Optical Magnetometer Incorporating Photonic Crystals

Sensitivity would be increased by orders of magnitude. According to a proposal, photonic crystals would be used to greatly increase the sensitivities of optical magnetometers that are already regarded as ultrasensitive. The proposal applies, more specifically, to a state-of-the-art type of quantum coherent magnetometer that exploits the electromagnetically- induced-transparency (EIT) method for determining a small change in a magnetic field indirectly via measurement of the shift, induced by that change, in the hyperfine levels of resonant atoms exposed to the field.

Posted in: Physical Sciences, Briefs

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A Panoramic View



Posted in: Blog

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