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(9,092 items)
Research & Technology News
Slow Dance Unites Atom, Photon
GARCHING, Germany -- GARCHING, Germany -- Researchers from the Max Planck Institute for Quantum Optics recently created a photonic molecule. They developed a setup to temporarily bind a single photon to a single atom, a technique that could lead to applications in quantum computing, as well as to research tools that produce a single photon on demand. From left, Thomas Fischer, Pepijn Pinkse, Gerhard Rempe and Peter Maunz of the Max Planck Institute for Quantum Optics work at the apparatus they use to genera...
Solid-State Blue Laser Unveiled
SANTA CLARA, Calif. -- SANTA CLARA, Calif. -- Researchers at Coherent Inc., Laser Group, have developed the prototype of a diode-pumped solid-state laser that emits light at 488 nm, addressing what has been a major concern of biologists. When scientists want to study an...
Study Confirms Attosecond Pulses
IRÁKLION, Greece -- IRÁKLION, Greece -- Although researchers have achieved laser pulses as short as a few femtoseconds, attosecond pulses have proved prohibitively difficult -- until now. A group at the Foundation for Research and Technology-Hellas has produced...
Technique Unveils Gene Process
BERKELEY, Calif. -- BERKELEY, Calif. -- Gene transcription is the first step in the process whereby information stored in DNA patterns is used to manufacture protein. When an RNA polymerase enzyme latches onto a DNA strand and begins to slowly reel it in, the...
3-D Crystals Created for the Visible Spectrum
OXFORD, UK -- OXFORD, UK -- One of the main challenges the photonics industry faces is the development of a three-dimensional crystal for the visible spectrum that will act on photons much as silicon devices act on electrons. Such structures exhibit a periodicity...
A Little Hard Time Does Photochemistry Good
NEW ORLEANS -- NEW ORLEANS -- A technique under development at Tulane University and the University of British Columbia in Vancouver, Canada, promises to advance asymmetric photochemistry. Although current approaches allow chemists to produce unique variants of...
Astronomers Discover Distant Quasar
Jun 1, 2000 — Astronomers with the Sloan Digital Sky Survey at Apache Point Observatory in New Mexico have announced the discovery of the most remote object in the known universe, a quasar with a red shift of 5.8. The 10-m W.M. Keck telescope on Mauna Kea in...
Bell Labs Extends 3-Tb/s Transmission
Jun 1, 2000 — Bell Labs in Murray Hill, N.J., has announced successful long-distance transmission at triple-terabit speeds. The researchers displayed transmission of 82 wavelengths at 40 Gb/s over three 100-km spans of parent Lucent Technologies Inc.’s...
Biocavity Laser Could Fill a Void
ALBUQUERQUE, N.M. -- ALBUQUERQUE, N.M. -- Today’s surgeons are, in some ways, blind. Because they can’t see how deep cancer cells may have spread, during an operation they remove not only the tumor, but also the surrounding tissue. If a biopsy indicates...
Butterfly Aids Color Research
EXETER, UK -- EXETER, UK --What do a TV set, a Georges-Pierre Seurat painting and an emerald swallowtail butterfly have in common? The cathode-ray tube, the pointillist painting and the insect all mix tiny points of color to produce other colors through the...
Chalmers Develops 49-dB Optical Parametric Amplifier
Jun 1, 2000 — A team at Chalmers University of Technology in Göteborg, Sweden, has developed a fiber-based optical parametric amplifier for use in broadband telecommunications. The device produces an internal fiber gain of 49 dB and a net gain of 38 dB over...
Computer Vision-Based System Gauges Fuel Levels
UNIVERSITY PARK, Pa. -- UNIVERSITY PARK, Pa. -- Most conventional fuel gauges rely on a sensor with low-voltage electrical leads that come in contact with the fuel, which some suspect have contributed to recent explosions on airplanes. Former graduate student Srivatsan...
Film Selectively Darkens Light
UNIVERSITY PARK, Pa. -- UNIVERSITY PARK, Pa. -- Intense light sources can cause damage to eyes and other optical sensors: a welding arc to a welder’s eyes or a robot’s vision system, a laser to a sensor, or even the glare of the sun or headlights to a...
Laser Tweezers Test Kramers’ Theory
EAST LANSING, Mich. -- EAST LANSING, Mich. -- Nearly 60 years after Hendrik A. Kramers described the thermally driven transitions of Brownian particles, researchers at Michigan State University have experimentally verified his theory. One of the most-cited articles in...
LEDs Benefit from Interface Engineering
Jun 1, 2000 — A research group from the UK, Germany and Singapore describes the production of efficient polymer LEDs by molecular-scale interface engineering in the March 30 issue of Nature.A series of green-emitting devices displayed an external forward...
Lucent Upgrades WaveStar to 320-Channel, 800-Gb/s Transmission
Jun 1, 2000 — Lucent Technologies Inc. of Murray Hill, N.J., has announced an upgrade to its WaveStar OLS 400G dense wavelength division multiplexing system. The OLS 800G quadruples the number of available wavelengths to 320, each transmitting at 2.5 Gb/s, for a...
New Material Cools to -100 °C
EAST LANSING, Mich. -- EAST LANSING, Mich. -- Many applications await the development of efficient, inexpensive, low-temperature thermoelectric coolers. Current passing through a thermoelectric material carries away heat, cooling the material and its surroundings....
New Process Developed for Telescope Mirror Manufacture
HUNTSVILLE, Ala. -- HUNTSVILLE, Ala. -- Advanced Optical Systems Inc. has teamed with Oak Ridge National Laboratory in Tennessee to develop a promising alternative means to manufacture lightweight mirrors for telescopes used in space and military applications....
Optics Center Refines Confocal Grinding
Jun 1, 2000 — The University of Rochester’s Center for Optics Manufacturing in New York is testing a prototype conformal optics grinder produced by Nanotechnology Systems of Keene, N.H. The device is the result of a collaboration among the university,...
Physicists Play Ring-Around-the-Atom
NORMAL, Ill. -- NORMAL, Ill. -- Electrons racing about their atomic nuclei at nearly the speed of light bring new perspectives to the development of x-ray lasers. High-power, short-pulse lasers can coax electrons to yield x-rays, but they excite the electrons so...
Researchers Find New Uses for an Old Semiconductor
ALBUQUERQUE, N.M. -- ALBUQUERQUE, N.M. -- Scientists at Sandia National Laboratories are putting an old alloy to work in new applications. Indium gallium arsenide nitride was developed almost 10 years ago, but it had remained a curiosity. Today, a "crunch program" is...
Schott Turns Out Glass for Ignition Facility
Jun 1, 2000 — Following months of cooperative research with Hoya Corp. of Fremont, Calif., Schott Glass Technologies Inc. of Duryea, Pa., has achieved continuous production of laser glass slabs for Lawrence Livermore National Laboratory’s National Ignition...
Scientists Observe Motion of Individual Atoms
PASADENA, Calif. -- PASADENA, Calif. -- In a development that could have far-reaching ramifications for single-atom science, physicists have created an "atom-cavity microscope" that uses single photons from a laser beam to track the motion of individual atoms....
SDL Tests Raman Amplifiers
Jun 1, 2000 — Researchers from SDL Inc. of San Jose, Calif., and AT&T Labs-Research of Red Bank, N.J., have reported that their field tests show that distributed Raman amplification improves the performance of 10-Gb/s wavelength division multiplex...
Small Particles Could Find Big Uses
URBANA, Ill. -- URBANA, Ill. -- At the University of Illinois, a researcher may be on the way to something big by starting small. Physics professor Munir Nayfeh has developed a technique for creating nanoparticles out of bulk silicon. When excited, the...
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July 2024
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