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(9,092 items)
Research & Technology News
Laser Spot Aims at Storage Market
MURRAY HILL, N.J. -- MURRAY HILL, N.J. -- A relatively simple solution to the problem of reducing a laser’s spot size using near-field optics may lead to an optical storage system that could store as much as 500 Gb/in.2 of data, up to 100 times current storage densities. Researchers at Lucent Technologies’ Bell Laboratories are working with Siros Technologies Inc. of San Jose, Calif., to commercialize the very-small-aperture laser, which has built-in near-field optics. Typically, laser spot size is...
Lunar Glass Beads Offer Clues to Craters
BERKELEY, Calif. -- BERKELEY, Calif. -- Comets and asteroids have bombarded the moon and Earth over the last 3 billion years, leaving craters in their wake. But the frequency of these bombardments -- and whether periodic or episodic variations have occurred -- remains...
New Technology: Pen on Paper
LUND, Sweden -- LUND, Sweden -- Let’s face it. No matter how much technology advances in the computer world, many users still feel more comfortable with good old-fashioned pen and paper. Although a new pen technology developed by Anoto AB might not be the...
Old LPs Find New Use in X-Ray Optics
STOCKHOLM, Sweden -- STOCKHOLM, Sweden -- In trying to develop a cheap way to focus x-rays, perhaps it should be no surprise that researchers turned to German technopop group Kraftwerk for help. The scientists bought one of the band’s albums to cut up and form...
Plastic Film Makes for Light Travel
ALBUQUERQUE, N.M. -- ALBUQUERQUE, N.M. -- Moving mass into space is an expensive proposition. The Next Generation Space Telescope, tentatively scheduled for launch in 2008, will weigh 15 kg/m2 of mirror surface, lean compared with Hubble’s 250 kg/m2, but still not...
Polymers Improve Electro-Optics
SEATTLE -- SEATTLE -- Larry Dalton runs short treks into the future. It’s a world of unlimited bandwidth, a place with steerable microwaves where aircraft and ships are all wired with fiber optic cable. And Dalton is convinced that such a future...
Raman Spectroscopy Opens the Earth’s Core
Aug 1, 2000 — Researchers from the Carnegie Institution of Washington and Ecole Normale Supérieure de Lyon in France have announced the results of experiments that will enable geophysicists to better understand the rotation and magnetism of the...
Readers Bridge the Net and Print Gap
Aug 1, 2000 — A microelectromechanical scanning reader under development by Microvision Inc. of Bothell, Wash., promises to link print media to the Internet. The company has announced that it will ship samples of the device next year; it expects the readers,...
Silicon Crystal Is Cheap, Simple
TORONTO -- TORONTO -- Researchers in Canada and Spain have overcome the obstacles to develop a three-dimensional photonic crystal that can be easily manufactured on a large scale at a low cost. Fabricated with silicon, it meets the criteria needed for complete...
Sputtering Yields 3200-GHz Filter
Aug 1, 2000 — Advanced Lighting Technologies Inc. of Cleveland has announced that its subsidiary Deposition Sciences Inc. of Santa Rosa, Calif., has produced a 3200-GHz optical bandpass filter using its reactive sputtering coating technology. The filters will be...
Strip Coating Makes the Grade
Aug 1, 2000 — A study of the reformulated Opticlean strip coating, distributed by Dantronix Research and Technologies of Platteville, Wis., suggests that the product removes fresh surface contaminants from silicon wafers without leaving a residue. Researchers...
Arrays Advance DNA Detection
MEDFORD, Mass. -- MEDFORD, Mass. -- Researchers from Tufts University have devised a screening method using a bead-based fiber optic array that could dramatically increase the speed and sensitivity of DNA sampling. A new type of DNA microarray incorporates latex...
Coral Reefs Yield Fluorescing Dyes for In Vivo Labeling
MOSCOW -- MOSCOW -- Green fluorescent protein extracted from luminescent jellyfish has been used as a marker for gene expression and protein localization in a number of biological systems. Despite the widespread use of this fluorescing dye, little is known...
Dry Process Creates Clearer Fibers
CAMBRIDGE, Mass. -- CAMBRIDGE, Mass. -- Although today’s fiber optic cables may be able to handle today’s telecommunications traffic, the future will demand considerably more bandwidth. Trying to resolve an argument about how contamination sneaks into the...
Food Wrap Foils Microbes
Jul 1, 2000 — Researchers at Toxin Alert Inc. in Mississauga, Ontario, Canada, have developed a plastic wrap that they hope will detect dangerous levels of bacteria in food. The product, which will be 15 to 25 percent more expensive than regular wrap, uses...
Free-Electron Laser Plunges into the UV
Jul 1, 2000 — A team at the Deutsches Elektronen Synchrotron facility in Hamburg, Germany, reported that it has produced coherent light at 110 nm with its free-electron laser. The work is part of a plan to construct a 6.4-nm device by 2003 and a laser emitting at...
High-Reflection Mirror Is All-Polymer Film
ST. PAUL, Minn. -- ST. PAUL, Minn. -- A new generation of multilayer polymer film developed by 3M Corp. shows advanced control of optical reflection at interfaces. In its commercial release last year, the film attracted attention for its high reflectance of both...
LEDs Offer Fast Data Transmission
TAMPERE, Finland -- TAMPERE, Finland -- With properties somewhere between a standard LED and a laser diode, resonant-cavity LEDs produce intense light from quantum wells. Compared with conventional LEDs, the resonant-cavity variety produces a brighter, more directional...
Microdevice Protects Sensors in a Blink
GAINESVILLE, Fla. -- GAINESVILLE, Fla. -- As concern grows about the potential for powerful lasers to disable satellite sensors, engineers continue to develop protective solutions (see Photonics Spectra, June 2000, p. 36). As part of research for the US Defense Advanced...
Mirror Readied for Binocular Telescope
Jul 1, 2000 — Scientists at the University of Arizona’s Steward Observatory Mirror Lab in Tucson have prepared the second 8.4-m mirror for the Large Binocular Telescope, scheduled for completion in 2004. They inspected and sorted tons of E 6 borosilicate...
Mode-Locked Laser Hits High Power
MOUNTAIN VIEW, Calif. -- MOUNTAIN VIEW, Calif. -- Engineers at Spectra-Physics Lasers Inc. have hit a new high for visible output powers in a laser based on saturable Bragg reflector technology. The frequency-doubled, quasi-continuous-wave (CW) Nd:YVO4 laser can sustain an...
Novalux Offers a Peek at Its Top-Secret Laser
Jul 1, 2000 — Novalux, a start-up based in Sunnyvale, Calif., has developed a high-power laser diode that it claims is a breakthrough technology for optical telecommunications. The device, which has been dubbed Necsel, for Novalux extended-cavity surface-emitting...
Researchers Reveal Aequorin’s Structure
Jul 1, 2000 — Aequorin, a photoprotein widely used in biomedicine to study the role of calcium in cellular functions, had resisted examination by x-ray crystallography over the 38 years since it was first identified. In the May 18 issue of Nature, an...
Signals Exceed Light’s Speed
FLORENCE, Italy -- FLORENCE, Italy -- An established concept in physics -- the impossibility of transmitting a signal faster than the speed of light in a vacuum -- is again up for debate. Various teams have transmitted superluminal light pulses, but experiments at the...
Silicon Crystal Used as X-ray Resonator
GRENOBLE, France -- GRENOBLE, France -- Short-wavelength light presents special difficulties for researchers. Hard x-rays have wavelengths thousands of times smaller than visible light, enabling them to skip the boundaries of common optical substances without changing...
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July 2024
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