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(38,325 articles)
Popular News
Polymer Optics Gain Respect
Oct 1, 2003 — For many years, polymer optics languished as the stepchild of the photonics world. Considered unsuitable for high-precision applications, plastic lenses were relegated to toys, low-accuracy eyepieces and low-end cameras — markets where high volumes, intense cost pressures and space constraints made these materials the only viable solution. With continued improvement in both materials and manufacturing techniques, new markets emerged, first in telecommunications and then in biomedicine and...
Photonics Detects Wildfires
Oct 1, 2003 — The fire season of 2002 was the second worst in 50 years, burning more than 7 million acres and engulfing Arizona, Colorado and Oregon. The devastation was a wake-up call to authorities charged with protecting the nation's parks and wilderness...
Optical Stimuli Control Magnetism in Novel Materials
Oct 1, 2003 — In 1886, Heinrich Hertz observed that utraviolet light, when directed at a conduction plate, caused an increase in electrical charge. Einstein later articulated this as the photoelectric effect and explained how light waves or photons exist in...
Grating Shrinks Endoscope
Oct 1, 2003 — Endoscopes provide high-resolution color images in real time for a range of medical applications, but these instruments are too large for procedures such as fetoscopy and pediatric surgery. A possible solution is to employ a single optical fiber...
Spectra-Physics Expands in China
Oct 1, 2003 — With the opening of a subsidiary in Beijing, Spectra-Physics of Mountain View, Calif., has expanded its operations in China. Spectra-Physics China will provide sales, service and support to the country's market for laser systems, photonic components...
Avanex to Purchase Optical Systems Unit of Vitesse
Oct 1, 2003 — With a view to expanding its transponder line and further developing systems that integrate optics, electronics and hard- and software, Avanex Corp. of Fremont, Calif., is acquiring certain assets of the Optical Systems Div. of Vitesse Semiconductor...
Montana Firm Wins S2-Chip Technology Funding
Oct 1, 2003 — To further develop S2-Chip technology for improved radar systems, Scientific Materials Corp. of Bozeman, Mont., has received a one-year contract worth $1,531,000 from the US Army Space and Missile Defense Command in Huntsville, Ala. The S2-Chip...
Headwall Photonics Is Launched
Oct 1, 2003 — Headwall Photonics Inc. has achieved a management buyout of the spectral module and holographic diffraction grating unit of Agilent Technologies in Fitchburg, Mass. Consisting of assets and funding totaling more than $8 million, the purchase...
PI Establishes NanoInnovation Grant
Oct 1, 2003 — Polytec PI Inc. of Auburn, Mass., has announced an annual award worth $25,000 to support the work of US and Canadian graduate and postdoctoral researchers in the fields of optics, nanotechnology and biotechnology. The PI (Physik Instrumente)...
Rockwell to Supply Spectacles for Laser Protection
Oct 1, 2003 — Under a two-year, $5.9 million contract, Rockwell Scientific Co. LLC of Thousand Oaks, Calif., will supply laser-protective eyewear to the US Air Force. Designed and produced under the Aircrew Laser Eye Protection program, the eyewear is for...
EaglePicher Cedes Optical-Grade Germanium Leadership to Umicore
Oct 1, 2003 — With Belgium-based Umicore SA's purchase of key germanium assets from EaglePicher of Quapaw, Okla., the domestic makeup of the market for the strategic material has shifted. Acquired for roughly $15 million, the facility, now Umicore Optical...
New Semiconductor Lithography Makes a Splash
Oct 1, 2003 — Semiconductor manufacturers are about to be all wet. But that's a good thing. A new technique called immersion lithography could allow the industry to continue tracking Moore's law, which forecasts substantial annual decreases in state-of-the-art...
Tunable Dispersion Compensator Uses Micromirrors
Oct 1, 2003 — At Sumitomo Electric Industries Ltd. in Yokoha-ma, Japan, engineers have developed a device based on microelectromechanical systems (MEMS) technology that provides tunable dispersion compensation across the spectrum of channels of a wavelength...
Hybrid Bragg Grating Enables Optical Current Sensor
Oct 1, 2003 — Engineers at City University of Hong Kong have demonstrated a compact, inexpensive optical sensor for alternating and direct currents. The sensor, based on a fiber Bragg grating, has a low susceptibility to temperature variations and offers an...
Quantum Dots Suitable for Computing
Oct 1, 2003 — Quantum computers promise to enable immense computing power in systems based on units of information called qubits, which are similar to the binary bits in today's classical computers but which also can simultaneously represent both a 0 and a 1....
Minilaser Is Tunable, Single-Frequency Source at 1.5 µm
Oct 1, 2003 — A widely tunable, single-frequency laser operating in the 1.5-µm spectral region has application not only in testing and qualifying C-band telecom components, but also in Doppler-shifted velocity measurements and in spectroscopic studies. A group of...
New Holey Fiber Is Easy to Manufacture
Oct 1, 2003 — Scientists at Virginia Polytechnic Institute and State University in Blacksburg have developed a new form of holey fiber that is easier to fabricate than previous types. They call it "random-hole optical fiber" because the airholes are randomly...
A New Tunable Optical Filter
Oct 1, 2003 — Tunable optical filters are versatile devices with a place in a host of photonic applications. They are essential in wavelength-flexible wavelength division multiplexing systems, and they also can play a key role in wavelength-tunable lasers for...
Chalcogenide Fibers Show Promise as Raman Lasers
Oct 1, 2003 — Lasers in the 2- to 10-µm region are important for a number of spectroscopic, remote sensing and military applications. Raman fiber lasers offer one approach to such lasers, but the relatively low Raman gain of conventional silica fibers is an...
Single Nanotubes Display Steady, Narrow Emissions
Oct 1, 2003 — Reporting in the Sept. 4 issue of Science, researchers at the University of Rochester in New York and at Universität Siegen in Germany describe their identification of constant, narrow-linewidth fluorescence from individual single-walled carbon...
New Ring Laser Design Promises Telecom Improvement
Oct 1, 2003 — Ring microlasers have proved useful in many applications, including optical communications, spectroscopy and photochemistry. A new approach to ring lasers has been proposed and analyzed by Amnon Yariv and Jacob Scheuer of California Institute of...
'Smart Dust' Self-Assembles and Self-Orients
Oct 1, 2003 — Micron-size, chemically asymmetric photonic crystals that were developed at the University of California, San Diego, in La Jolla target organic liquid/water interfaces and orient themselves to display discrete reflectivity spectra. The particles of...
Buckyballs Enhance Third-Order Optical Nonlinearity
Oct 1, 2003 — Scientists at the University of Toronto and at Carleton University in Ottawa have produced polyurethane optical films containing buckyballs that exhibit third-order optical nonlinearity at near-IR telecommunications wavelengths up to 100 times...
Solid-State Lasers Stand Their Manufacturing Ground
Oct 1, 2003 — For perhaps the first time, conventional Nd:YAG lasers face serious competition from other solid-state technologies in a variety of micro- and macroscale cutting and welding applications.On the cutting front, improvements in beam quality and spot...
Pulsed Nd:YAG Lasers Push the Welding Envelope
Oct 1, 2003 — The growth of industrial welding applications continues to push the welding envelope of lasers in terms of faster speeds, deeper penetration, more-weldable materials and smaller spot sizes. The welding applications emerging from the medical,...
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August 2024
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