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(38,418 articles)
Popular News
'Bug Eyes' Offer Potential for Collision Warning
Apr 1, 1997 — ADELAIDE, Australia -- Austrailian researchers at the Centre for High Performance Integrated Technologies and Systems at the University of Adelaide have developed a decision-making optical sensor on a single- chip system with a little inspiration from the insect world. The scientists have developed a "seeing, thinking" microchip that mimics an insect's eye to detect objects and their motion and to raise red flags in case of imminent collision without the intensive computing required by...
Cameras, Infrared Sensors Nab California Toll Cheaters
Apr 1, 1997 — Four of the 12 tollbooths on the Interstate 80 Carquinez Bridge in Northern California are using photonics technology to catch drivers who do not pay the toll. Caltrans is testing a new automatic toll-collection system that recognizes transponders...
Design Breakthrough Improves Lossy Confocal Microscopes
Apr 1, 1997 — OXFORD, UK -- Engineers at the University of Oxford have discovered a way to get up to 50 times the light efficiency from confocal microscope systems that currently employ a component called a Nipkow disc. By replacing the Nipkow disc with a...
High-Power Quantum Cascade Laser Works, Chilled, in the IR
Apr 1, 1997 — Researchers at the University of Houston's Space Vacuum Epitaxy Center and Sandia National Laboratories have developed high-power infrared semiconductor lasers that combine standard diode laser and quantum cascade laser technologies. The research...
Infrared Device Measures Wave Temperatures, Dude
Apr 1, 1997 — SAN DIEGO -- If surfers here want a sure-fire way to find the "hottest" waves, they might do well to adopt a technique from the University of Washington's Applied Physics Laboratory in Seattle. Scientists are using an infrared imager to measure the...
Intensified CCDs Detect Single-Photon Emission
Apr 1, 1997 — TRENTON, N.J. -- The new generation of high-resolution, back-illuminated intensified charge-coupled device (CCD) cameras will allow scientists to directly study the processes that regulate individual molecules, expanding the bodies of knowledge in...
Israeli Conference Marks Industry's Anniversary
Apr 1, 1997 — JERUSALEM -- A glimpse into the future by the laser's discoverer and a retrospective on the development of holography highlighted the 10th Meeting on Optical Engineering held last month at Jerusalem's International Convention Center. Keynote...
Laser Microscopy Technique Reduces Sample Damage
Apr 1, 1997 — SAN JOSE, Calif. -- Breakthroughs in a relatively new laser-based microscopy technique have produced high-resolution images of living specimens with relatively little photodamage. The less harmful nature of the infrared light it uses makes the...
Measurement System Ensures that Black Is Black on Displays
Apr 1, 1997 — Conventional techniques of assessing contrast in displays fall short and often vary depending on reflections that caused "veiling glare" in the measurement device's optical system. Researchers at the National Institute of Standards and Technology...
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...
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...
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