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(38,331 articles)
Popular News
Semiconductor Group Launches Nanoelectronics Research Initiative
Dec 1, 2004 — SAN JOSE, Calif., Dec. 1 -- Noting that the laws of physics will eventually limit the implementation of CMOS scaling technology, the Semiconductor Industry Association (SIA) announced today it has launched the Nanoelectronics Research Initiative (NRI), an ambitious research program aimed at assuring US leadership in information technology. The SIA said the NRI will bring universities, the federal government and the US semiconductor industry together to conduct research on materials, device...
Matter-to-Light Quantum State Transfer Demonstrated
Dec 1, 2004 — Physicists Alexander M. Kuzmich and Dzmitry N. Matsukevich of Georgia Institute of Technology in Atlanta have reported the transfer of quantum state information from clouds of ultracold atoms to single photons. The work may have applications in the...
Electrically Pumped 1.5-µm MEMS VCSEL Tunes over 40 nm
Dec 1, 2004 — A collaboration of scientists at Two-Chip Photonics AG and Technische Universität Darmstadt, both in Darmstadt, Germany, and at Technische Universität München in Munich, Germany, has resulted in an electrically pumped vertical-cavity...
A Light Switch in More Ways than One
Dec 1, 2004 — Researchers at Cornell University in Ithaca, N.Y., have fabricated a silicon-based, all-optical light switch. Built using standard semiconductor manufacturing methods, the device enables one beam of light to switch another on and off. The...
Efficient Ho:YAG Laser Oscillates in Single Longitudinal Mode
Dec 1, 2004 — By minimizing thermal loading on a Ho:YAG laser rod, a research group at the University of Southampton in the UK has demonstrated an efficient high-power, single-frequency laser in the eye-safe 2-µm spectral region. Such sources are useful for...
Airborne Laser Achieves 'First Light'
Dec 1, 2004 — Boeing Integrated Defense Systems of St. Louis, a unit of Boeing Co., announced the successful demonstration of "first light" in the laser to be used in the prototype for the US Air Force's Airborne Laser Project. In the test, which was performed at...
Quantum-Dot Infrared Detector Displays Multispectral Operation
Dec 1, 2004 — In the Nov. 1 issue of Applied Physics Letters, engineers at Stanford University in California report the development of a two-color InGaAs quantum-dot infrared photodetector that operates at 5.5 and 9.2 µm at 77 K. Potential applications of the...
Microring Lasers Target Optical Data Processing
Dec 1, 2004 — A research group at Technische Universiteit Eindhoven and JDS Uniphase Corp., both in Eindhoven, the Netherlands, has demonstrated that coupled microring lasers exhibit bistable operation with picosecond switching times, making them suitable for use...
Miniature Tools Created for Micromachining
Dec 1, 2004 — Tiny polycrystalline diamond cutting tools fabricated by scientists at the University of Kentucky in Lexington, George Washington University in Washington and Pennsylvania State University in University Park are suitable for the machining of hard...
Nanofiber 'Flash Welding' Investigated
Dec 1, 2004 — Scientists at the University of California, Los Angeles, report in the November issue of Nature Materials that exposing polymer nanofibers to a camera flash enables the fabrication of patterned films as well as of novel composite materials. The...
Laser Beams Tied in Knots
Dec 1, 2004 — Scientists at the University of Glasgow and the University of Southampton, both in the UK, reported in the Nov. 11 issue of Nature the formation of link and knot structures from dark lines embedded within Laguerre-Gaussian laser beams. The...
Wet Stamping Produces Multicolor Micropatterning
Dec 1, 2004 — Researchers at Northwestern University in Evanston, Ill., have reported the multicolor micropatterning of a thin-film substrate using a technique called wet stamping. The development has potential applications in the production of...
Photonics Offers Remote Measurements of Mount St. Helens
Dec 1, 2004 — Mount St. Helens, the volcano in southwest Washington state that erupted in 1980, is again showing signs of life. Scientists with the US Geological Survey and NASA are using photonics technology to track the growth of a new volcano dome with an...
Magnetic System Images Audiotape
Dec 1, 2004 — Physicist David P. Pappas, project leader of magnetic recording measurements at the National Institute of Standards and Technology's Electromagnetics Div. in Boulder, Colo., thinks that there's more than one way to spot a problem on an audio...
Spectral Filter Is Cheap, Tunable and Accurate
Dec 1, 2004 — Although the principal motivation for developing inexpensive tunable optical filters is the potentially massive market for such devices in telecommunications, these filters will find important, albeit less remunerative, applications in spectroscopy,...
Silicon Laser Is Realized
Dec 1, 2004 — At the University of California, Los Angeles, scientists have reported the demonstration of what they believe to be the first silicon laser, a feat that exploits the Raman effect. Ozdal Boyraz and Bahram Jalali have described pulsed Raman laser...
Intracavity Fiber Sensors Are Sensitive and Inexpensive
Dec 1, 2004 — A novel approach to monitoring fiber optic sensors by placing them inside a mode-locked laser resonator has been conceived and demonstrated by researchers at Insensys Ltd. of Fareham and at Aston University, both in the UK. The technique is...
Aircraft Detection System Ensures Free-Space Laser Safety
Dec 1, 2004 — As scientists continue to explore our solar system, there are increasing demands to return greater volumes of data from smaller deep-space probes. Accordingly, NASA is studying advanced strategies based on free-space laser transmissions, which offer...
Diode Lasers Enable Rapid, Strong Repairs for Combat Aircraft
Dec 1, 2004 — One of the most intractable problems confronting modern air force ground crews is the effective repair of combat aircraft skins. Typically, a crew must fix the holes caused by bullets and shrapnel in the outer skin of various parts of a number of...
Dual-Layer Coatings Target Next-Generation Optical Discs
Dec 1, 2004 — With the emergence of the Blu-ray video recording format, end users can record, rewrite and play back at least two hours of digital HDTV or more than 13 hours of standard video on a single optical disc. Currently, however, Blu-ray systems are found...
'Wiring' Light with Femtosecond Laser Pulses
Dec 1, 2004 — Shortly after the invention of the laser, researchers discovered that intense laser pulses can cause dielectric breakdown and structural change in materials. This generally was considered a nuisance, hindering both research and the development of...
Approaches Aim to Unmask Semiconductors
Dec 1, 2004 — When Walt Trybula looks at the future of semiconductor manufacturing, he sees problems. Such foresight is part of his job as a senior fellow at the Austin, Texas-based semiconductor research consortium Sematech. Besides looking forward to spot...
Infrared Chemical Imaging: The Future of FourierTransform IR Spectroscopy
Dec 1, 2004 — Fourier transform infrared (FTIR) spectroscopic techniques are valued for their rapid, nondestructive analysis of materials as well as for their ability to identify the chemical signature of small samples. The Michelson interferometer is the...
Atomic Spectroscopy:A Looking-Glass View of thePast, Present and Future
Dec 1, 2004 — The oldest atomic spectroscopy technique is flame emission spectrophotometry, first employed by Gustav R. Kirchhoff and Robert W. Bunsen in the mid-1800s. Spark emission spectrometry was a natural progression of the method and was developed in the...
Gigabit Ethernet Finds a Foothold in High-Performance Vision
Dec 1, 2004 — Real-time operation is a requirement for most high-performance vision applications, including destructive testing, postal sorting, security and surveillance, and the inspection of electronics gear such as flat panel displays, semiconductors and...
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