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emission News
Quantum Light Source Emits Circularly Polarized Single Photons
LOS ALAMOS, N.M., Aug. 29, 2023 — An approach to quantum light emitters developed at Los Alamos National Laboratory stacks two different atomically thin materials to realize a source that generates a stream of circularly polarized single photons that can be used for a variety of...
Metasurfaces Open Up Research Paths For Quantum State Engineering
ERLANGEN, Germany, Sept. 15, 2022 — Scientists from the Max Planck Institute for the Science of Light and the Friedrich-Alexander-Universität Erlangen-Nürnberg, in cooperation with Sandia National Laboratories, have pioneered a method of generating entangled photon pairs...
Solar Cells Get Boost from Quantum Dots
LOS ALAMOS, N.M. and MILAN, April 15, 2014 — Quantum dots may have a bright future in solar energy. Researchers from Los Alamos National Laboratory, in collaboration with the University of Milan-Bicocca, have found that the superior light-emitting properties of quantum dots can efficiently...
Control could make random lasers useful
VIENNA – Random lasers, with their very irregular angular emission pattern, are difficult to tune. But a team at Vienna University of Technology has theoretically shown that random lasers can be controlled by actively shaping the spatial pump distribution,...
Controlling Random Lasers
VIENNA, July 15, 2013 — Random lasers, with their very irregular angular emission pattern, are difficult to tune. But a team at Vienna University of Technology has theoretically shown that they can be controlled by actively shaping the spatial pump distribution, giving...
Smaller Features, Faster Wafers
WEST LAFAYETTE, Ind., Dec. 16, 2010 — The manufacturing of semiconductor wafers used in all types of electronics involves etching small features onto a wafer with lasers. This process ultimately is limited by the wavelength of the light itself. The semiconductor industry is rapidly...
Sound helps make a better optical clock
BRAUNSCHWEIG,Germany – Optical fibers are commonly used to transmit information and data via modulated light pulses. Now, however, three researchers at Physikalisch-Technische Bundesanstalt (PTB), working with optical frequencies rather than voice or data, are seeking to...
For better LEDs, two V’s could mean victory
Aug 1, 2010 — For light-emitting diodes, a brighter, more efficient and groovier future may be at hand. The result could be billions of dollars of annual energy savings, say researchers from the National Institute of Advanced Industrial Science and Technology...
Agilent Acquires Novelx
SANTA CLARA, Calif., Jan. 25, 2010 - Novelx, a Lafayette, Calif.-based maker of field emission scanning electron microscopes (SEMs), has been acquired by measurement company Agilent Technologies for an undisclosed amo...
Solution Makes Smog Glow
PITTSBURGH, Aug. 31, 2009 – Kazunori Koide and colleagues at the University of Pittsburgh have developed a fluorescent solution that glows bright green in the presence of ozone. Compounds that can detect ozone and other oxidants are already in existence, but what makes this...
OLED Efficiency Improved
DAEJEON, South Korea, July 17, 2009 -- A research team at KAIST (Korea Advanced Institute of Science and Technology) has discovered surface plasmon-enhanced spontaneous emission based on an organic LED (OLED), a finding expected to improve the device's energy consumption, KAIST officials...
A Faster Single-Atom Detector
COLLEGE PARK, Md., May 19, 2009 -- A new single-atom detection system that uses two polarizations of light simultaneously through cavity mirrors is more than 99.7 percent accurate and can discern the arrival of a neutral atom in less than one-millionth of a second, about 20 times...
Bottoms Up: Zinc Oxide Glows
DURHAM, N.C., Dec. 18, 2008 -- A compound commonly used on babies' bottoms has been made to produce brilliant light best suited to the human eye. Duke University adjunct physics professor Henry Everitt, chemistry professor Jie Liu and their graduate student John Foreman...
Star Death Seen From Start
GREENBELT, Md., May 22, 2008 -- Images captured by NASA's Swift satellite have allowed an international team of astronomers to observe, for the first time, a star just as it started to explode. Thousands of previous observations of such star explosions, or supernovae, conducted...
Cu Nanowires Create Displays
CHAMPAIGN, Ill., April 30, 2008 -- Copper (Cu) nanowires grown at low temperatures and catalyst-free could serve as interconnects in electronic device fabrication and as electron emitters in a very thin flat panel display known as a field emission display. “We can grow forests of...
Laser Analyzes Combustion
AMES, Iowa, Dec. 6, 2007 -- A high-speed system of lasers, mirrors and cameras is being built to analyze combustion inside engines, power generators and heating systems, with the ultimate goal of reducing reliance on fossil fuels. A fuel derived from biomass could produce...
Spectroscopy Tools Developed
GAITHERSBURG, Md., June 11, 2007 -- Calibration tools have been developed to help correct and confirm the performance of analytic instruments that identify substances based on fluorescence. Recent years have seen a significant increase in the development and use of...
Bruker Biosciences Establishes Business Unit in Australia
Dec 15, 2006 — Bruker Biosciences Corp. announced that it will launch a new Bruker AXS business unit, Bruker Biosciences Pty Ltd., in Australia on Jan. 1, 2007. Bruker AXS, a provider of life science, materials research and industrial x-ray analysis tools, has...
Nano-Etching Makes LEDs 7X Brighter
GAITHERSBURG, Md., July 24, 2006 -- Researchers at the National Institute of Standards and Technology (NIST) have made semiconductor LEDs more than seven times brighter by etching nanoscale grooves in a surrounding cavity to guide scattered light in one direction. The novel...
Ultrasound Laser Analog Built
CHAMPAIGN, Ill., June 13, 2006 -- By using sound instead of light, researchers have mimicked the essential nature of a laser by creating its ultrasound analog. Called a uaser (pronounced WAY-zer) for ultrasound amplification by stimulated emission of radiation, the instrument...
Dow Corning Forms Light Management Group
Dec 1, 2005 — Dow Corning Corp. of Midland, Mich., will move its Photonics Solutions business development program into its Electronics business to address the needs of its customers in the optoelectronics market. The company will increase its sales, marketing and...
Where Spectroscopy and Fiber Optics Meet
Mar 1, 2004 — The intersection of spectroscopy and fiber optics continues to give rise to some very interesting results. Spectroscopy, with its ability to determine chemical and mineralogical composition, temperature, emission and molecular activity, is still...
(22 results found)
May 2024
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