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(38,288 articles)
Popular News
Kodak Imaging Sensors Make Second Trip to Mars
Feb 1, 1999 — On the much-publicized Mars Pathfinder mission, Eastman Kodak Co.'s digital imaging technology played an essential role in surveying the landscape of the distant planet. In December, the company's digital imaging sensors were again aboard a NASA mission to Mars, this time to study Mars' climate and atmosphere. The spacecraft was outfitted with wide- and medium-angle cameras. The wide-angle camera will scan the entire planet periodically at 1 km per pixel, acquiring images in five colors plus...
Solid-State Laser Achieves 22 W of Average Output
Feb 1, 1999 — Researchers at Lambda Physik Inc. in Fort Lauderdale, Fla., wanted to design a pulsed Nd:YAG laser system with a high-quality beam, enabling high-efficiency frequency conversion. Recently, they reached their goal, producing a diode-pumped,...
Laser Lumpectomy Leaves No Scars
Feb 1, 1999 — A new non-invasive technique combining interactive magnetic resonance imaging (MRI) and fiber optic laser delivery has shown promise in locating and ablating cancerous breast tumors. Researchers at the University of Arkansas for Medical Sciences...
Altimeter Maps Mars' North Pole
Feb 1, 1999 — The Mars Orbiter Laser Altimeter payload on the Global Surveyor spacecraft has generated the first comprehensive three-dimensional map of the martian north pole. The altimeter's 50-cm-diameter telescope gathered more than 2.5 million laser pulses...
Method Measures Heat of Thin-Film Semiconductors
Feb 1, 1999 — With their complexity and materials changing, integrated circuits are generating more heat, creating a greater need to monitor that heat to improve efficiency and reliability. Researchers are measuring the thermal properties of various thin-film...
Scientists Uncover Mysteries of Hydrogen Using Nova
Feb 1, 1999 — Scientists have wondered why Saturn appears younger than the rest of the planets in the solar system. Now they may be closer to understanding the structure and evolution of far-off planets, thanks to Lawrence Livermore National Laboratory's...
Team Builds More Efficient Quantum Cascade Laser
Feb 1, 1999 — From chemical spectroscopy to free-space optical communications, a growing number of applications can benefit from lasers emitting in the IR between 8 and 12 µm. In recent years, many have looked closely at quantum cascade laser technology for...
Two Associations Recognize Raman's Discovery
Feb 1, 1999 — One of the most popular methods for detecting illegal drugs and unknown substances is Raman spectroscopy. The technique takes advantage of the Raman effect, named after C.V. Raman of Calcutta, India, a professor at Calcutta University who theorized...
Chemical Sensor Offers Sensitive Real-Time Solution
Feb 1, 1999 — A sensor developed at the Georgia Tech Research Institute could make detection of chemical contaminants highly portable and sensitive, and also enable in situ monitoring of a range of chemicals. It is a planar optical waveguide chip with 13...
Space Shuttle Launch Recorded Digitally
Feb 1, 1999 — For the first time, NASA has recorded and transmitted a space shuttle launch digitally, according to a release from Force Inc., the company that provided the space agency with its digital video transmission links. Cameras at the transmission...
Undersea Telescope Detects Neutrinos
Feb 1, 1999 — Collaborators will soon deploy an underwater telescope to detect and study high-energy cosmic neutrinos. Placed on the ocean floor 2.35 km below the surface, the telescope may eventually unlock fundamental secrets of the universe. An artist's...
Artificial Tongue Relies on CCD
Feb 1, 1999 — A team of researchers from the University of Texas at Austin has developed a device that mimics the function of the human tongue. The electronic device contains a 3 x 3 array of polyethylene glycol/polystyrene beads bearing chromogenic indicator...
Laser-Based System Sees Through Walls
Feb 1, 1999 — Anyone who has read the comics knows about Superman's powers, from leaping tall buildings in a single bound to peering through walls with x-ray vision. But seeing through walls may no longer be the stuff of cartoons if a group from Rensselaer...
South Pole Researchers Witness Atmospheric Halos
Feb 1, 1999 — Mother Nature put on her own light show at the South Pole last month when atmospheric halos appeared before researchers, construction workers and a visiting TV crew. The halos were caused by the reflection and refraction of sunlight by ice crystals...
Corning Files Suit Against Fibercore Ltd.
Feb 1, 1999 — Corning Inc. in Corning, N.Y., has filed suit against Fibercore Ltd. of Southampton, UK, claiming unfair competition and an infringement on two of its optical fiber patents. Corning is seeking an injunction and unspecified damages. The dispute...
Lucent to Merge with Ascend Communications
Feb 1, 1999 — Telecommunications giant Lucent Technologies Inc. in Murray Hill, N.J., has signed a definitive agreement to acquire Ascend Communications Inc. in a stock swap valued at close to $20 billion. The move could signal Lucent's intentions of competing...
Nichia Delivers Blue-Violet Laser
Feb 1, 1999 — Leading the pack in development of a blue laser, Japan's Nichia Chemical Industries Ltd. is delivering on its promise to commercialize blue-violet laser diodes, with shipments slated for the beginning of this month. "If the results of testing of our...
Uniphase Subsidiary Sold to KLA-Tencor Corp.
Feb 1, 1999 — KLA-Tencor Corp., a supplier of semiconductor wafer inspection products, has purchased the Ultrapointe subsidiary of Uniphase Corp. Terms of the agreement were not disclosed. One of Ultrapointe's main products is a confocal laser review station,...
Laser Chillers:
Feb 1, 1999 — Some like it hot. Even some lasers don't mind the heat as much as others. But the laser user that disregards thermal management altogether is asking for trouble. Laser users might not put a whole lot of thought into cooling their systems, relying on...
Beam Correction in Laser Diodes:
Feb 1, 1999 — Laser diodes are now widely used in industrial, computer, communications and consumer products. These tiny semiconductor lasers have all but replaced the HeNe laser in many applications in the visible range and enticed enough customers to produce a...
Wavelength Lockers Keep Lasers in Line
Feb 1, 1999 — Dense wavelength division multiplexing (WDM) transmission systems have taken on a level of sophistication never before seen in the telecom industry. Wavelength spacings of 100 GHz (0.8 nm) and 50 GHz (0.4 nm) are challenging system manufacturers to...
Image Sensors:
Feb 1, 1999 — Many scientific, medical and industrial imaging applications rely on camera systems that contain high-performance charge-coupled device sensors (CCDs). These applications require sensors that provide high signal levels and very low noise. This...
Speed Demons: Is 'Faster' Better and Cheaper?
Feb 1, 1999 — If you need to produce X amount of work, you have two options: Hire a roomful of average workers to do pieces of the work, or hire a few fast, efficient people to do the same work. The fast workers will, of course, demand higher salaries; but the...
Telecommunication Systems Minimize Laser Risks
Feb 1, 1999 — The rapid development and implementation of optical telecommunication technology have significantly aided the growth of Information Technology in the 1990s. Ready access to the Internet and the decreasing cost of telephone calls, both nationally and...
Acquisition Causes IR Imaging Market Shift
Feb 1, 1999 — Flir Systems Inc. has struck again, this time putting together a deal to acquire Inframetrics Inc., a commercial imaging systems manufacturer in Billerica, Mass., with 1997 sales of $53.5 million. Flir spokesman Doug Little said Inframetrics offers...
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