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Research & Technology News
Laser Analysis Used for Mining
AACHEN, Germany, Jan. 3, 2011 — As the demand for minerals and other natural resources increases so does the need for the optimization of mining techniques. The Fraunhofer Institute for Laser Technology ILT has now developed a laser analysis system that makes identifying potential mineral reserves more reliable. The most common methods for mining are drilling, blasting and cutting. In order to decide which areas are worth mining, a mine operator needs to be able to model the deposit accurately, showing where, at what...
Production of Gold Nanoantennas Made Highly Precise
Washington, Jan. 3 , 2010 — Moving a step closer toward quantum computing, a research team in the Netherlands recently fabricated a photodetector based on a single nanowire, in which the active element is a single quantum dot with a volume of a mere 7000 cubic nanometers. ...
3-D interior modeling: A virtual walk on the inside
BERKELEY, Calif. – A laser-equipped backpack worn by a human operator has provided 3-D modeling of interior sections of a campus building at the University of California, enabling a virtual walk through the academic halls. Automated 3-D modeling of building interiors...
Gaining chirped pulse amplification with fiber only
VILLENEUVE D’ASCQ, France – Optical parametric amplification is a common method for improving laser-based telecommunications by boosting signal strength across long lengths of fiber optics. If you chirp the signal pulses – stretching and recompressing each pulse –...
Lasers ready to flourish again in 2011
Jan 1, 2011 — If there is a recession, somebody needs to remind the laser industry. Despite a miserable two years for most industries – especially real estate, banking and automotive – most companies who make lasers saw only a fairly short and shallow...
Quantum cloning: Radiometry on a small scale
GENEVA – Measuring the luminous power of light is a basic task in physics laboratories and telecom applications. Until recently, however, measuring light energy in an absolute manner has required the complex equipment and techniques available only in...
Single photons retain character as wavelength changes
GAITHERSBURG, Md. – The wavelength of a single photon can be changed significantly without destroying its fundamental quantum character, researchers have reported. This finding has application in the developing field of quantum information science, which includes...
Single-shot 3D imaging matrix offers stealth capabilities
GRENOBLE, France – Researchers have demonstrated a single-pulse active 3D imaging matrix operating in the infrared. The imaging matrix can produce a three-dimensional image of a distant object with only a single laser pulse, said the investigators, who work with the...
Synchrotron x-rays from a tabletop source
LONDON – A tabletop instrument in development may have the potential to produce bright, spatially coherent synchrotron x-rays similar in energy and quality to those generated by some of the largest x-ray facilities in the world. Such x-rays could enable...
Telecom tech could protect aircraft
ANN ARBOR, Mich. – Infrared supercontinuum laser technology could soon help protect military helicopters from heat-seeking missiles designed to home in on IR radiation emitted by a helicopter’s engine. Built with off-the-shelf telecom fiber optics, the laser...
Thin-film laser takes a practical approach to silicon photonics
DURHAM, N.C. – Scientists have successfully built a thin-film laser onto silicon that demonstrates the lowest threshold current densities to date for lasers on silicon integrated with waveguides. The Duke University researchers say that their tiny laser is cheap...
Fahrenheit -459: Neutron Stars and String Theory
DURHAM, N.C., Dec. 30, 2010 — Ultrachilled atoms trapped in a "bowl" made of laser light and then placed in a magnetic field have allowed scientists to measure the viscosity of a gas often considered to be the sixth state of matter. The measurements verify that this gas can be...
Highly Precise Gold Nanoantennas Produced
WÜRZBURG, Germany, Dec. 30, 2010 — Physicists of the University of Würzburg have now produced tiny gold antennas that can capture sunlight with unheard of precision, which could lead to more efficient photovoltaic power generation. Nanoantennas can — similarly to a...
Times Square Ball Greener Than Ever
NEW YORK, Dec. 30, 2010 — The Times Square Ball, the 103-year-old iconic universal symbol that officially ushers in the new year by "dropping" in Times Square, is more energy efficient than ever, with its 32,256 Philips Luxeon LEDs using the same amount of energy as it takes...
Heat, Dissipation Measured at Molecular Level
HOUSTON, Dec. 29, 2010 — Researchers have figured out a way to determine the temperature of a molecule or flowing electrons by using Raman spectroscopy combined with an optical antenna. A new paper from the lab of Douglas Natelson, a Rice University professor of...
Metamaterials Research: ‘Project Squid Skin’
HOUSTON, Dec. 29, 2010 — Nanotechnologists, marine biologists and signal-processing experts from Rice University, the Marine Biological Laboratory in Woods Hole, Mass., and other US universities have won a $6 million grant from the Office of Naval Research to unlock the...
NIST Awards $22M to Manufacturing Research
GAITHERSBURG, Md., Dec. 29, 2010 — The creation of substrates for next-generation photonic and electronic devices, and the development of new manufacturing processes for organic photovoltaics and flexible LCDs are among nine research projects awarded $22 million in funding from The...
Single-Pixel Camera Is Developed
CASTELLÓ, Spain, Dec. 29, 2010 — Researchers from the Optics Research Group at Universitat Jaume I have developed a new tool for the field of scientific imaging, a sensor of just one pixel can record high-quality images and distribute them securely. In 2009, Willard S. Boyle and...
Metamaterials Mimic Optical Möbius Symmetry
BERKELY, Calif., Dec. 28, 2010 — After years of searching, scientists have discovered Möbius symmetry in metamaterials – materials engineered from artificial "atoms" and "molecules" with electromagnetic properties that arise from their structure rather than their...
‘Sonic Boomlets’ Used to Cut Nanotubes
PROVIDENCE, R.I., Dec. 23, 2010 — For the first time researchers have documented how single-walled carbon nanotubes are cut, a finding that could lead to producing more precise, higher-quality nanotubes. According to the researchers at Brown University and in Korea, such...
10eV Photons of UV Laser Light Delivered
NEWPORT NEWS, Va., Dec. 23, 2010 — Department of Energy's Thomas Jefferson National Accelerator Facility has produced a long-sought, rare color of laser light 100 times brighter than that generated anywhere else. Steve Benson, Free-Electron Laser physics, manages UV lasing...
HgCdTe Imaging Array Breaks Record
GRENOBLE, France, Dec. 23, 2010 — CEA-Leti has announced the first infrared imaging array in the 8- to 10-µm band capable of returning an image with a record-breaking thermal resolution of 1 to 2 mK at ambient temperature and with traditional image rates of 25 to 50 Hz. ...
NIR Light Tests for Blood Sugar
TSUKUBA, Japan, Dec. 22, 2010 — Researchers in Japan have demonstrated that the glycemic index (GI) can be determined by measuring the light emitted when the palm of the hand is illuminated with NIR light. NIR spectroscopy measurements through the palm of the hand have proved the...
Osram Team Feted for Direct Green-emitting Laser
SUNNYVALE, Calif., Dec., 22, 2010 — Scientists at Osram Opto Semiconductors, based in Regensburg, Germany, have been awarded the Beckurts Prize by the Karl Heinz Beckurts Foundation for developing a direct green-emitting laser. Scientists at Osram Opto Semiconductors today received...
Predicting Learning Ability of Dyslexics
STANFORD, Calif., Dec. 22, 2010 — Researchers at the Stanford University School of Medicine have used sophisticated brain imaging to predict with 90 percent accuracy which teenagers with dyslexia would improve their reading skills over time. The research, which is the first to...
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