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(38,284 articles)
Popular News
Near-Field Scanning Optical Microscopy Measures Diode Beam Properties
Apr 1, 1997 — Astigmatism is a problem for laser diodes, and even after applying correctional optics, residual astigmatism (a few microns) remains because of laser-to-laser variations. In addition, temperature and pump current variations may affect astigmatism and other beam properties. Knife-edge techniques with mathematical processing can produce reasonably accurate assessments of beam parameters, but researchers at Boston University and the IBM Research Center in Switzerland wrote in Applied Physics...
Optical Sensor Keeps Tabs on Rocket Fuel
Apr 1, 1997 — MARLY-LE ROI, France -- Bigger is not always better -- especially when you are building rockets. A new optic sensor under development in France could provide flight engineers with the first pressure readings from inside the liquid gas fuel tanks...
Side-Pumping Diodes Mean More Power for Materials Processing
Apr 1, 1997 — SUNNYVALE, Calif. -- A novel technology in which a side-pumped laser diode drives a solid-state laser source could mean more power and greater precision for materials processing applications, say the scientists who developed it. Use of diode lasers...
Melles Griot Agrees To Acquire Omnichrome
Apr 1, 1997 — After a month of rumor and speculation that began at the Photonics West exhibition, Melles Griot Inc. announced that it will acquire Omnichrome Corp. According to Melles Griot CEO David Hardwick, Omnichrome will move from its Chino, Calif., location...
CLEO/QELS Papers To Highlight New Technologies
Apr 1, 1997 — Organizers of this year's Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEOQELS) say they have received 1490 submissions for technical papers, 14 percent more than last year. Hot topics include a...
Researchers Use Lasers To Make Photonic Bandgap Structures
Apr 1, 1997 — Photonic bandgaps are three-dimensional structures that can reflect electromagnetic radiation in a band of frequencies propagating in any direction. Scientists from the Max Planck Institute for Biophysical Chemistry have fabricated such structures...
Team Begins Building Megawatt Airborne Laser
Apr 1, 1997 — The US Air Force has granted approval for construction of the first laser hardware for the $1.1 billion military Airborne Laser system. Boeing, TRW and Lockheed Martin are building the 747-based system, which will use a high-energy chemical oxygen...
Veeco Is Poised To Purchase WYKO
Apr 1, 1997 — Veeco Instruments Inc. of Plainview, N.Y., has signed a letter of intent to purchase Tucson, Ariz.-based WYKO Corp., currently a privately owned company, for 3 million shares of stock. Veeco officials say their hard drive and semiconductor customers...
Adaptive Optics Aim for Earthly Applications
Apr 1, 1997 — Large Earth-based telescopes use adaptive optics to measure and compensate for rapidly fluctuating wavefront distortions that blur the images of objects viewed through the turbulent atmosphere. Compensation for turbulence is important in many other...
Fiber Optic Gyros Put a New Spin on Navigation
Apr 1, 1997 — Aircraft, spacecraft and ships have long benefitted from using gyroscopes to help them navigate, and recently advances in photonic gyroscopes have brought this technology into the mainstream. These improved gyroscopes -- based on fiber optic...
Laser Radar Watches the Friendly Skies
Apr 1, 1997 — Rain, fog, high winds and snow are notorious for ruining air travel schedules. Not only do these conditions inhibit the smooth (and tightly scheduled) flow of aircraft, but they add to the air traffic controller’s burden. Laser radar research under...
Stereo Displays Add A New Dimension to Work
Apr 1, 1997 — If commercially available stereoscopic displays could work without special glasses and be viewed from virtually any angle, by any number of people at once, we would probably view all three-dimensional data stereoscopically. Alas, such a technology...
Photonics in Transportation
Apr 1, 1997 — Since the 1980s, the world’s burgeoning population has forced many governments to realize that they must build more efficient transportation systems or fail to meet the needs of a modern citizenry. The problem is simply defined: you can only cram so...
Arctic Communities Get Wired, Thanks to Friends in Warm Places
Apr 1, 1997 — SALUIT, Quebec -- Residents of the northernmost Quebec province of Nunavik, about 1000 miles from Montreal, now have their own entrance ramp onto the information superhighway, thanks to the efforts of several fiber cable makers. One, Chromatic...
Corning Reaches Optical Fiber Sales Milestone
Apr 1, 1997 — More than 1 million km of Corning Incorporated's SMF-LS optical fiber have been sold since the product was introduced in 1994. This nonzero dispersion-shifted fiber is making its mark as high-capacity, long-haul transmission segments of the market...
Israeli Defense-System Manufacturer Reorganizes for Geographic Focus
Apr 1, 1997 — Israeli high-tech defense system manufacturer Elecro-Optics Industries Ltd. has undergone a structural reorganization, dividing the company into geographic market areas. The Israel, Asia-Pacific, North America and Civilian Systems divisions will...
EG&G Consolidates Its Operations, Offers More Customer Flexibility
Apr 1, 1997 — The Canada, Electro-Optics, Judson, Power Systems and Reticon divisions of EG&G Inc. have been consolidated into one division, dubbed EG&G Optoelectronics. Paul Beech, Werner Rech and Andre Buser were named general managers. Beech said that...
French, UK Labs Create Partnership
Apr 1, 1997 — PARIS -- A 20-year scientific association has been formalized in the creation of the Laboratoire Europeén Associé, a joint European laboratory for high-power laser science. Founders are the French Centre National de la Recherche...
Galileo Loses $20.4 Million Account for Photocopier Component
Apr 1, 1997 — Galileo Corp. of Sturbridge, Mass., has received written notification that Xerox Corp. has developed internal production capabilities for dicorotron assemblies, electronic components used in photocopiers, and will no longer buy them from Galileo....
Judge Issues Injunction Against DOE's National Ignition Facility
Apr 1, 1997 — WASHINGTON -- In December 1996, Thomas Cochran, director for the Natural Resources Defense Council, smelled something foul about the National Academy of Sciences' technical review of the proposed $1.1 billion National Ignition Facility. Three months...
Nippon Electric Awards Solar Contract
Apr 1, 1997 — CHATSWORTH, Calif. -- Japan's Nippon Electric Co. has awarded the contract for Solar Array Drive Assemblies and the associated electronics for its Optical Interorbit Communications Engineering Test Satellite program to Schaeffer Magnetics Inc. The...
Outdoor Laser Safety Is in the Hands of the FAA
Apr 1, 1997 — WASHINGTON -- Laser safety issues are again on the bargaining table. This time, the Federal Aviation Administration (FAA) is facing the National Transportation Safety Board (NTSB), and the impetus is a series of incidents involving lasers and...
UK Photonics Exhibition Continues to Grow
Apr 1, 1997 — BIRMINGHAM, UK -- The fourth Image Processing & Optic Technology exhibition in February introduced more than 2000 people to the latest photonics technology from more than 100 companies. The general attitude of exhibitors and attendees at the...
Binocular System Improves Target Tracking
Apr 1, 1997 — Initial target acquisition presents problems for operators of portable video trackers. With a portable tracker, the operator cannot sit on the mount, but typically acquires the target with a joystick. In a featureless sky, it is often difficult to...
Fast, High-Resolution Cameras Image the Sun's Surface
Apr 1, 1997 — To the average person, the sun is a celestial body around which the Earth and other planets revolve. It's a source of warmth and light. Many don't realize that the sun is a star, and an interesting one at that. But researchers at the Big Bear Solar...
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