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(38,118 articles)
Popular News
Shattered Beamlet Lens Blamed on Timing Error
Dec 1, 1996 — LIVERMORE, Calif. -- A high-power experiment on Lawrence Livermore National Laboratory's Beamlet laser destroyed one of the setup's lenses and damaged another. No injuries were reported, but officials say that the September incident caused $70,000 in damage. Scientists were operating the laser at a 15-kJ, 20-ns pulse -- the highest power yet tested on the prototype laser -- when the 61-cm-diameter, 3.5-cm-thick lens shattered. Investigators reported that the operators used incorrect...
Europeans Issue Report on Diffractive Optics Technology
Dec 1, 1996 — JENA, Germany -- The development of a step-by-step fabrication process for diffractive optical elements was announced in the final report of a European research alliance concerned with discoveries and applications in the field. The partnership,...
IBM Laser Scientist-Sleuths Solve an Old Astronomy Mystery
Dec 1, 1996 — YORKTOWN HEIGHTS, N.Y. -- Two IBM scientists, calling on their years of expertise in lasers, believe they have solved the missing starlight mystery -- a.k.a. the diffuse interstellar bands, or DIBs. Astronomers have long known that light from...
Three Lidars Team Up to Probe the Atmosphere
Dec 1, 1996 — CHAMPAIGN, Ill. -- In a joint optical remote-sensing program, scientists from the National Center for Atmospheric Research (NCAR) Atmospheric Technology Div. and the National Oceanic and Atmospheric Administration (NOAA) Environmental Technology...
Nearing the End of the Road
Dec 1, 1996 — MAINZ, Germany -- The fourth and final glass/ceramic mirror substrate for the Very Large Telescope has been sent from Schott Glaswerke to R.E.O.S.C. near Paris for final finishing. Each of the 8.2-m mirrors took 23 months to complete and will be in...
Sensor Company to Develop Image-Enhancement Processor for US Air Force
Dec 1, 1996 — Irvine Sensors Corp. of Costa Mesa, Calif., is developing an electronic image-enhancement processor for the US Air Force's Wright Laboratory Avionics Directorate. The processor will be part of an add-in board for the lab's 50-billion operations per...
Toshiba Develops Blue-Purple Laser for Next-Generation Digital Storage
Dec 1, 1996 — Scientists at Toshiba Corp. have generated 417-nm pulses using a GaN semiconductor laser powered at room temperature. The company's metallorganic chemical vapor deposition technique made the development possible by controlling the phase boundary of...
US Air Force, Utah State University to Make Cheaper Satellite Communications
Dec 1, 1996 — Developing a lightweight, inexpensive satellite laser communications system is the goal of an educational partnership agreement between the US Air Force's Phillips Laboratory and Utah State University. Researchers will build and test a low-power...
Laser Welding Technology to Put Kewaunee Power Plant Back On-Line
Dec 1, 1996 — KEWAUNEE, Wis. -- Throughout the nuclear power industry, steam generators have met their enemy, and its name is corrosion. Now, a new laser welding technology may prove to be the saving grace of corroded steam generator tubes in general and for the...
Researchers Count on Buckyballs to Create Tiny 'Abacus' for Processing
Dec 1, 1996 — Scientists at IBM Zurich in Switzerland have used a scanning tunneling microscope probe to reposition C-60 molecules, or "buckyballs," on a copper substrate, producing a room-temperature device that can store and manipulate numbers at a single...
Boeing Wins $1.1 Billion Contract to Build Laser-Armed Warplane
Dec 1, 1996 — The US Air Force awarded a $1.1 billion contract to Boeing Defense Space Group to manufacture a prototype laser-armed warplane that would target enemy ballistic missiles. The plane, a modified 747 freighter, will carry a weapons-class laser that can...
Candela Medical Laser Systems Approved for Use in Japan
Dec 1, 1996 — Japan's Ministry of Health has approved two laser systems developed by Candela Corp. of Wayland, Mass., for the treatment of skin lesions. The devices, the AlexLAZR and the PLTL Pigmented Lesion/TATULAZR, use the company's alexandrite laser...
Pentagon Awards Missile Defense Radar Contract to Lockheed Martin
Dec 1, 1996 — After a two-year bidding process, Lockheed Martin's Missile and Space Corp. in Sunnyvale, Calif., has won a $1.8 billion contract from the Pentagon to build a satellite system that warns against ballistic missile attack. Lockheed will construct five...
SDL Introduces Solid-State Blue Laser for Printing, Biosensing Applications
Dec 1, 1996 — SDL Inc. of San Jose, Calif., unveiled a new solid-state blue laser during the Photonics East conference and exhibition in Boston last month. According to published specifications, the 450-nm "product preview" device is an air-cooled, waveguide...
SpecTran Plans Expanded Facility for Optics Subsidiary
Dec 1, 1996 — SpecTran Corp. of Sturbridge, Mass., plans to increase its capacity to manufacture optical fibers, cable and related products at its Avon, Conn.-based subsidiary, SpecTran Specialty Optics Co. The $9 million project will involve new fiber draw...
Laser Chemistry Moves Toward Smaller and Faster Probes
Dec 1, 1996 — Molecular-level studies examine the effect of individual molecules on the properties of chemistry and materials. Recent progress in such studies has relied on some new laser techniques: Ultrafast lasers have recently reduced the time scale to break...
Diode-Pumped Solid-State Lasers Find Their Place in the Lab
Dec 1, 1996 — The $100 million-plus annual scientific laser market continues to be a prime area of opportunity and focus despite limited research and development expenditures in recent years. Historically dominated by gas, lamp-pumped solid-state and dye lasers,...
Lasers Control Molecular Motion
Dec 1, 1996 — In quantum mechanics, interest has turned toward controlling, rather than explaining, atomic, molecular and electronic processes. The technology of coherent control employs light-induced interference to affect the dynamics of matter and assist in...
Objective Measurements Improve Imaging Optics
Dec 1, 1996 — Determining optical quality is no easy task because of the trade-offs in specifying imaging optics. For a quantitative assessment of optics, engineers turn to modulation transfer function measurements, which measure the frequency response of an...
Lasers Offer Coherent Control of Material Behavior
Dec 1, 1996 — The goals of laser control in chemistry include manipulation of collective and molecular properties. Femtosecond lasers have already helped study crystal lattices, and more extensive manipulations are expected because of advances in laser pulse...
Optical Fiber Reaches from Lab to Factory
Dec 1, 1996 — The use of fiber optics in the laboratory has been steadily increasing for five years. Optical fiber devices can be used for temperature sensing, pressure sensing, pH measurements and material-specific sensing. However, the bulk of laboratory demand...
Laser Advances Spark Ultrafast Studies
Dec 1, 1996 — Advances in solid-state short-pulse laser oscillators, amplifiers and ultrafast optics have sparked an explosion in the number of studies of ultrafast phenomena. These experiments include direct control of chemical reactions, direct observations of...
Photomultiplier Tubes See the Light -- One Photon at a Time
Dec 1, 1996 — Dating archaeological finds, locating schools of fish, measuring food contamination, mapping the stars and monitoring pollution levels are all applications that requirer Raman spectroscopy. This article discusses appropriate optical fibers for each...
Laser Firm Gets University License for Marketing Al-Free Laser Diodes
Dec 1, 1996 — EVANSTON, Ill. -- Northwestern University has granted an exclusive license to Semiconductor Laser International Corp. (SLI) of Endicott, N.Y., to develop, manufacture, market and sell aluminum-free high-power semiconductor lasers worldwide for...
Transatlantic Telecommunications System to Use Alcatel Fiber Optic Cables
Dec 1, 1996 — UK-based Cable Co. International Ltd. has awarded a $400 million contract to Alcatel Submarine Networks of London, to supply fiber optic cable for what it calls the most advanced transatlantic fiber optic cable system ever constructed. Alcatel will...
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