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(9,092 items)
Research & Technology News
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 was commissioned by the German Federal Cartography and Geodesy Office of Frankfurt am Main, is slated to begin operation at an underground laboratory in Wettzell in 2001. The instrument will monitor and detect perturbations in the Earth’s...
1.3-µm VCSEL Produced for Telecommunications
Oct 1, 2000 — Nova Crystals Inc., located in San Jose, Calif., has developed a 1-mW, 1.3-µm vertical-cavity surface-emitting laser (VCSEL) for use in optical data and telecommunications networks. The InP devices are plug-compatible with SONET/SDH modules...
Alcohol Helps Astronomers Date Stars
LEIDEN, Netherlands -- LEIDEN, Netherlands -- Many of us have probably harbored fantasies of dating a star, perhaps at some Hollywood nightspot. Researchers at Leiden Observatory have made their dreams a reality. In an article currently in press at Astronomy and...
Caged Atoms Offer Big Possibilities
OAK RIDGE, Tenn. -- OAK RIDGE, Tenn. -- A technique that traps single atoms for study at room temperature may find applications in dense optical storage media, single-atom lasers and novel detectors. By doping nanocrystals with rare-earth ions, researchers are...
Chromophore Suited to Data Storage
Oct 1, 2000 — Researchers from the University of Cincinnati and the Air Force Research Laboratory at Wright-Patterson Air Force Base in Ohio have announced the results of their study of a fluorine-based chromophore that may find applications in high-density...
Cluster Carries Los Alamos Spectrometers
Oct 1, 2000 — The second pair of satellites in the European Space Agency’s Cluster II mission were successfully launched Aug. 9, bringing with them imaging electron spectrometers developed at Los Alamos National Laboratory in New Mexico. Over their two-year...
Corning Ships Mirror Blank to Chilean Observatory
Oct 1, 2000 — Corning Inc. of Corning, N.Y., has announced that it has shipped the 4.3-m primary mirror blank to the Southern Observatory for Astronomical Research at Cerro Pachón in Chile. Constructed of ultralow-expansion glass, the monolithic blank...
Corning Updates Bandwidth Specification
Oct 1, 2000 — Corning Inc. of Corning, N.Y., has announced that it will use the restricted mode launch bandwidth measurement specification on its InfiniCor 300 and InfiniCor CL 1000 multimode fiber for 850-nm laser operation. The standard is the result of work by...
DoE Labs Demonstrate Free-Electron Laser
Oct 1, 2000 — Scientists from the US Department of Energy’s (DoE) Brookhaven National Laboratory in Upton, N.Y., and Argonne National Laboratory in Argonne, Ill., have demonstrated a high-gain harmonic-generation free-electron laser. They hope it will lead...
Electron Pairs ’Dance’ in Laser Field
FREIBURG, Germany -- FREIBURG, Germany -- Researchers have again advanced our understanding of laser ionization with the observation of correlated momenta in electron pairs that are liberated from their atoms. The finding further supports the rescattering theory, which...
Faster Than Light? Well …
PRINCETON, N.J. -- PRINCETON, N.J. -- The dreams of warp drive and faster-than-light communications will have to remain just that. According to the scientists who have demonstrated superluminal group velocity, the reports of the death of special relativity have been...
Fibers Talk, Lock, Make High-Brightness Laser
WATERFORD, Conn. -- WATERFORD, Conn. -- For at least 30 years, researchers have attempted to combine the light from several separate, low-power semiconductor laser beams to produce a single high-quality, high-brightness beam. But getting the beams to lock phases...
Instrument Characterizes Colloids
ALBUQUERQUE, N.M. -- ALBUQUERQUE, N.M. -- Researchers at Los Alamos National Laboratory have developed a system that characterizes the properties and behavior of colloids. Originally developed to analyze particulate pollution in the environment, especially radioactive...
LaserChip Validation Completed
Oct 1, 2000 — Spectra Science Corp. of Providence, R.I., and Glaxo Wellcome Inc. of Research Triangle Park, N.C., have completed a preliminary evaluation of Spectra Science’s LaserChip combinatorial chemistry technology. LaserChips are smart bead supports...
Lasers Could Improve Drilling Safety
READING, UK -- READING, UK -- If you shake a bottle of cola and open it, you get a sug-ary mess. If you open a pocket of high-pressure gas in the borehole of an oil well, you get a catastrophic blowout. A laser-based technique proposed by scientists at the...
Mid-IR Detector Operates at Room Temperature
Oct 1, 2000 — A PIN photodiode under development in France at Thomson-CSF of Orsay and École Polytechnique of Palaiseau may challenge the place of thermal imagers such as microbolometers and pyroelectric devices in IR sensing applications. The researchers...
Moonstruck: Caught on Video
GRANADA, Spain -- GRANADA, Spain -- It’s difficult to catch a falling star, and even harder to photograph one, especially if the "star" you’re trying to capture is a meteoroid in the act of crashing into the moon. But Jose-Luis Ortiz and his colleagues at...
Pixel Pyramids May Improve LEDs
Oct 1, 2000 — A team from the University of California in Los Angeles believes that a structure of pyramid-shaped pixels may boost the lateral resolution of organic LED displays by a factor of three or four. Yang Yang and Shun-Chi Chang have described in the Aug....
Polymers Control Energy Transfer
LOS ANGELES -- LOS ANGELES -- Chemists at the University of California have demonstrated a means to control energy transfer in polymer semiconductors embedded in channels of nanoporous silica. Researchers are paying close attention to such conjugated polymer...
Researchers Investigate Laser Welding of Aluminum
COLUMBUS, Ohio -- COLUMBUS, Ohio -- Researchers are perfecting the laser welding of aluminum alloys to overcome a roadblock in the development of more fuel-efficient cars and trucks. Over the last decade, automotive manufacturers have used laser-welded sheet steel,...
Sputtering Promises Lower Temperatures, High Speed
FRANKFURT, Germany — If you are truly excited by optical production equipment, the biannual Optatec trade shows are the place for you. Nestled among this year’s surface generators, planetary polishers and OEM optical components was a new sputtering system from...
US Air Force Develops All-Gas Chemical Laser
Oct 1, 2000 — The Air Force Research Laboratory Directed Energy Directorate at Kirtland Air Force Base in New Mexico has developed an all-gas chemical laser that may eventually be used in the Airborne Laser and Space-Based Laser programs. The research lab’s...
Wafer Detects Harmful Bacteria
WEST LAFAYETTE, Ind. -- WEST LAFAYETTE, Ind. -- A multidisciplinary team at Purdue University is developing a method for detecting harmful bacteria using a silicon wafer coated with proteins. The researchers hope that the work will lead to a rapid, cheap, disposable means...
Waveguide Reveals Singularities
ENSCHEDE, Netherlands -- ENSCHEDE, Netherlands -- The optical equivalent of scanning tunneling electron microscopy promises to aid the design and analysis of photonic devices in telecommunications and integrated optics. Called a heterodyne interferometric photon scanning...
A Smaller, Cheaper Laser Achieves High Power
ASHKELON, Israel -- ASHKELON, Israel -- The trouble with high-power lasers is their size and cost. A 1000-W laser is typically about 1.5 to 2.5 meters long and weighs between 1000 and 1300 kg. A team including a scientist and five engineers claims to have resolved this...
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July 2024
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