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(38,299 articles)
Popular News
Photonics Defies the Depths
Nov 1, 2000 — We’re aboard the Ningaloo Blue, two miles out in the Indian Ocean, about to swim with the world’s largest known sharks. Nine years earlier, an amateur biologist discovered that the extremely rare and elusive whale shark regularly comes to this remote part of the northwestern Australia coast shortly after the first full moon in April. Once here, the sharks bask near the surface for about two months and then leave. So far, no scientist has been able to fully explain either their...
Adaptable, Efficient Lasers Expand Their Role in Microfabrication
Nov 1, 2000 — Cell phones, computers, stents, microsatellites, smart cards, ID tags -- there’s no escape from products incorporating miniature components. Consumers are expected to spend billions of dollars for such devices over the next few years. Debate...
Submarine Fiber Networks Have the World on a String
Nov 1, 2000 — Submerged in the world’s oceans are well over a million kilometers of submarine cable -- enough to circle the globe 30 times -- forming a network of arteries that carry huge volumes of traffic between continents. Although satellite...
Production Testing Improves Laser Economics
Nov 1, 2000 — The increasing demand to send more information through existing optical fibers is accelerating the growth of dense wavelength division multiplexed (DWDM) telecommunications systems. In these systems, many solid-state lasers operate at slightly...
Vibrational Spectroscopy: Now in 3-D
Nov 1, 2000 — A team at the University of Illinois in Urbana-Champaign has developed a multispectral, time-correlated vibrational spectroscopy technique that promises to advance chemistry and nanotechnology. The technique, which will be described in the Journal...
Fiber Amplifiers Subject of Dispute
Nov 1, 2000 — The board of trustees of Stanford University in Stanford, Calif., and Litton Advanced Systems Inc. of Woodland Hills, Calif., have filed suit against more than a dozen players in the telecommunications industry, alleging that companies have...
Congress Opens Doors to Skilled Foreign Workers
Nov 1, 2000 — At the urging of lobbyists for high-tech companies and with the support of the Clinton administration, Congress has passed a bill that will increase the number of six-year H-1B visas for skilled, foreign-born workers. The Immigration and...
Kodak Announces Worldwide Availability of CCD and CMOS Sensor Products
ROCHESTER, N.Y. -- ROCHESTER, N.Y., -- Eastman Kodak Company has announced an initiative to market its solid-state sensor technology into worldwide digital imaging markets through the company’s Image Sensor Solution (ISS) division. Kodak has redefined the ISS...
Kodak Drives CCD Integration and Performance With New Interline Image Sensor
ROCHESTER, N.Y. -- ROCHESTER, N.Y., -- Eastman Kodak Company has introduced the Kodak Digital Science KAI-1020 image sensor, a new one million pixel interline CCD imager which integrates most of the discrete components previously required to build a digital camera...
Kodak Announces Two New Large Format CCD Image Sensors
ROCHESTER, N.Y. -- OCHESTER, N.Y. -- Eastman Kodak Company has announced the latest additions to its line of Kodak Blue Plus Color CCDs, the KAF-5100CE and the KAF-16801CE. These image sensors bolster the company’s position as one of the leading suppliers of...
New Devices Offer CCD-like Performance With The Integration and Cost Benefits Of CMOS
Nov 1, 2000 — Eastman Kodak Company has announced the latest additions to its line of Kodak Digital Science image sensors and the first to be based on CMOS technology. The KAC-0310 VGA sensor and the KAC-1310 Megapixel sensor offer performance features commonly...
NEC Achieves 6.4-Tb/s Transmission
Nov 1, 2000 — Researchers from Tokyo-based NEC Corp. reported at the European Community Optical Communication Conference in Munich, Germany, that they have demonstrated a transmission capacity of 6.4 Tb/s over a 186-km fiber. The team developed technologies to...
Chemists Win Nobel for Optical Polymers
Nov 1, 2000 — The Royal Swedish Academy of Sciences has awarded the Nobel Prize in chemistry to Alan J. Heeger, Alan G. MacDiarmid and Hideki Shirakawa. The researchers are being honored for their work with conductive polymers, paving the way for organic...
Shack-Hartmann Challenges Interferometry
Nov 1, 2000 — A team of researchers at Lawrence Livermore National Laboratory in Livermore, Calif., has determined that Shack-Hartmann wavefront sensors offer sufficient sensitivity to replace phase-shifting interferometers for the characterization of large...
Coatings Control Aberration in Optical Pickups
Nov 1, 2000 — The demand for more-compact optical disk drives in laptops has created a problem: The shorter image-to-object distances result in astigmatism. The solution has been to introduce aberrations into the plastic lenses in the optical pickups, but this...
Smart Cameras Have Their Eye on Crime
COLLEGE STATION, Texas -- COLLEGE STATION, Texas -- Don’t look now, but Big Brother is just around the corner, say researchers at Texas A&M University. No, not the reality TV program, but automated surveillance cameras that can track people in train stations, the...
Diamonds Produce Single Photons
Nov 1, 2000 — Two research teams from Germany and France have reported that nitrogen impurities in Ib synthetic diamonds can be used as room-temperature single-photon emitters. Such stable and robust sources of single photons could be a boon to the development of...
Bigger Isn’t Always Better for Molecular Light Funnels
ROCHESTER, N.Y. -- ROCHESTER, N.Y. -- Researchers at the University of Rochester have determined the ideal size for a light-harvesting molecule that one day may improve the light gathering of everything from photoelectric cells to genetically engineered plants. Led by...
Pulse-Shaping Yields Efficient X-ray Generation
Nov 1, 2000 — An international group of scientists has found that controlling the shape of laser pulses improves soft x-ray generation by nearly an order of magnitude. The technique incorporates a feedback loop to control the shape of the 800-nm pulses from a...
Lasers Tweaked to Catch Gravity Waves
ADELAIDE, Australia -- ADELAIDE, Australia -- Researchers at Adelaide University had a bright idea: Develop a laser to boost the sensitivity of gravitational wave detectors. From Galileo’s homemade telescope in the 17th century to the great observatories of the 20th...
Zeiss Building Giant Laser Gyro
Nov 1, 2000 — Carl Zeiss of Oberkochen, Germany, has taken an important step in the completion of a mammoth ring laser gyroscope with the delivery and installation of the 10-ton, 4.25-m Zerodur disc that is the centerpiece of the instrument. The gyroscope, which...
Laser Altimetry Detects Thinning Ice
WALLOPS ISLAND, Va. -- WALLOPS ISLAND, Va. -- It’s probably a good idea to hold off buying that beachfront cottage, at least until the effects of global warming are better understood. Using an aircraftmounted laser altimeter and a global positioning system, a group...
Bow Tie Is Key to New Blue Laser
BOZEMAN, Mont. -- BOZEMAN, Mont. -- For years, researchers have sought to generate long-wavelength blue laser light inexpensively. Now a team from Montana State University has done just that by frequency doubling a Fabry-Perot diode laser in a bow-tie-shaped ring...
X-Rays Mark the Spot for Mines
PALE, Bosnia -- PALE, Bosnia -- Finding land mines is slow, tedious and dangerous. Because today’s mines are mostly plastic, metal detectors cannot find them. The most reliable detection method requires "de-miners" to get on their hands and knees to probe the...
Optics Firm, NASA Produce Lightweight Mirror for Space Telescope
Nov 1, 2000 — San Diego-based Composite Optics Inc. has announced that it has completed construction and testing of a 2-m prototype mirror for the European Space Agency’s Far-Infrared and Submillimeter Space Telescope. The mirror, which was fabricated from...
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