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Research & Technology News
Silicon Chip Produces Tunable Photon Pairs
SAN DIEGO, Calif., Dec. 17, 2014 — A silicon photonic chip that emits entangled photon pairs in a controlled fashion could one day enable quantum transceivers. Developed at the University of California, San Diego, the chip is pumped by a telecommunications-grade low-power diode laser. Through a filter, the chip produces two daughter photons for each pair of photons it absorbs. One of the daughter photons will have a higher frequency than the input photons, and the other will have a lower frequency; their total frequency
Terahertz, IR Beams Detect Trace Gases at a Distance
DURHAM, N.C., Dec. 17, 2014 — A combination of IR and terahertz radiation (T-rays) is giving scientists a nose-up on toxic gases. This technology is able to sniff out even trace amounts of harmful gases — from chemical spill effects to nerve gas attacks — in the air...
Nanoparticle Paint Enables Fraud-Proof Credit Cards
ENSCHEDE, Netherlands, Dec. 16, 2014 — Light could soon build a brick wall between credit cards and hackers, as a fraud-proof authentication technique can keep credit cards and the identities associated with them secure. The technique — quantum-secure authentication (QSA),...
‘Smart’ Windows Block Heat, Not Light
SHANGHAI, Dec. 15, 2014 — A new kind of smart window blocks out heat when the outside temperature rises, potentially reducing the use of air conditioning. Developed by researchers from several Chinese institutions, the windows turn an opaque white in response to external...
Smaller, Faster Lidar Could Map Seafloor from Aerial Drones
ATLANTA, Dec. 15, 2014 — A lidar system light enough to fly on a drone and fast enough to process highly distorted signals in real time could enhance underwater mapping and security. Firing a high-power green laser 10,000th of a second, a prototype built at the Georgia Tech...
Tests of Space Station’s Laser Downlink Successful
PASADENA, Calif., Dec. 15, 2014 — The first round of testing on an earth-to-orbit laser data link was a success, according to NASA officials. In 18 tests over four months, the Optical Payload for Lasercomm Science (OPALS) system aboard the International Space Station transmitted...
Fluorescent Dyes Target Disease Genes
JENA, Germany, Dec. 12, 2014 — Fluorescent dye-coated nanoparticles could be used to target and turn off disease-related genes. To test this concept, a team of researchers from Germany and the U.S. developed nanoparticles that interfered with cholesterol production in the livers...
Photonics21 Holds Elections, Sets Priorities
DUSSELDORF, Germany, Dec. 12, 2014 — The European industry and research association Photonics21 recently carried out membership and priorities votes. Jenoptik CEO Michael Mertin was unanimously re-elected as association president. Meanwhile, professor Dr. Rob Eason of the...
High-Q Metamaterial Resonator Different from the Crowd
SAN DIEGO, Dec. 11, 2014 — A new nanophotonic resonator efficiently traps light by exploiting a quantum phenomenon called bound states in the continuum (BIC). Researchers at the University of California, San Diego, said the metamaterial cavity could enable optical computing...
Toschek to Receive 2015 Herbert Walther Award
WASHINGTON, Dec. 11, 2014 — Professor Dr. Peter E. Toschek of the Institute for Laser Physics at the Hamberg University in Germany will receive the 2015 Herbert Walther Award from The Optical Society (OSA) and Deutsche Physikalische Gesellschaft (DPG). Toschek will be...
Laser Creates Graphene Electronics from Polymer
HOUSTON, Dec. 10, 2014 — An IR CO2 laser operating at room temperature can turn cheap polymer into multilayer graphene with heightened electrical conductivity and capacitance. Researchers at Rice University say their one-step laser-induced graphene (LIG) process could...
Thales, ICFO Partner on mid-IR Lasers
BARCELONA, Spain, Dec. 9, 2014 — The Institute of Photonic Sciences (ICFO) will collaborate with the Thales Group of France to develop ultrafast mid-infrared lasers with high energies and repetition rates. The lasers could be used in IR spectroscopy and biomedical imaging, as well...
Transparent Spheres Simplify 3-D Nanolithography
RALEIGH, N.C., Dec. 9, 2014 — A photolithography technique using nanospheres could make fabrication of 3-D structures easier, and at lower costs. The new technique, developed by a team from North Carolina State University and based on oblique illumination of colloidal particles,...
Ground-Based Telescope Observes ‘Super-Earth’ 40 Light-Years Away
TORONTO, Dec. 8, 2014 — For the first time, a 2.5-m telescope has been used to observe the transit of a “super-Earth” around its parent star. An international team of astronomers used the Nordic Optical Telescope on the island of La Palma, Spain, to perform...
International Project Tackles Fiber Solutions for Internet Bandwidth Crunch
BRUSSELS, Dec. 8, 2014 — An international academic-industrial collaboration will explore options for expanding fiber optic data capacity in densely populated areas. The €1.5 million SAFARI (Scalable And Flexible optical Architecture for Reconfigurable Infrastructure)...
UV Flashlamp System Aids Ebola Disinfection
SAN ANTONIO, Dec. 5, 2014 — SAN ANTONIO, Dec. 5, 2014 — With the zap of a xenon UV flashlamp, numerous pathogens — including the Ebola virus — can be eradicated from surfaces around a room. Developed by Xenex founder Dr. Mark Stibich, a new disinfection...
Biospeckle Laser Method IDs Fruits’ Peak Ripeness
BEIRUT, Dec. 4, 2014 — There is a relatively small window of “peak edibleness” for fruits such as apples and tomatoes. Imagine being able to fit in that window at precisely the right time for an optimal harvest. That is now possible with a new laser technique....
Modified Streak Camera Captures 100B Frames Per Second
ST. LOUIS, Dec. 4, 2014 — A modified streak camera is fast enough to capture the movement of a single laser pulse in real time. Streak cameras measure the intensity variation in a pulse of light with time, but in only one dimension. Researchers at Washington University gave...
Imaging Systems to Explore Asteroid Composition Close-Up
TANEGASHIMA, Japan, Dec. 3, 2014 — A probe launched today by the Japan Aerospace Exploration Agency (JAXA) carries a spectroscopy and imaging systems to examine the composition of a near-Earth asteroid. Asteroid Explorer Hayabusa2 is on a mission to explore the origins of the solar...
‘Digital’ Metamaterials Constructed from the Bit Up
PHILADELPHIA, Dec. 2, 2014 — There could be a simpler way to create metamaterials, ultimately leading to light-bending invisibility cloaks and other seemingly impossible devices. A team from the University of Pennsylvania has discovered that a metamaterial with a given...
UK Establishes 4 Quantum Technology Hubs
BIRMINGHAM, England, Dec. 2, 2014 — Four newly established quantum technology research hubs in the U.K. will explore advanced light detectors and more. The £120 million project involves 17 universities and 132 companies and is funded by the British Engineering and Physical...
Attosecond UV Pulses Could Control Electrons
LINCOLN, Neb., Dec. 1, 2014 — Elliptically polarized attosecond laser pulses could ionize helium atoms in a controlled fashion, potentially giving physicists control over the freed electrons. In a theoretical study, an international team led by researchers at the University of...
Blu-ray Disc Pattern ‘Nearly Optimized’ for Solar Absorption
EVANSTON, Ill., Dec. 1, 2014 — The pattern of information written on a Blu-ray disc, regardless of what it is, could lead to better operating solar cells. A team at Northwestern University has discovered a way to improve solar cell performance with the help of such discs....
Chip Puts Sound and Light on the Same Wavelength
MINNEAPOLIS, Dec. 1, 2014 — A new chip generates both light waves and ultrahigh-frequency sound waves — and forces them to interact. “Our breakthrough is to integrate optical circuits in the same layer of material with acoustic devices in order to attain extreme...
Northeastern, PHI Establish Research Program
BOSTON, Dec. 1, 2014 — A collaboration between Northeastern University and Phase Holographic Imaging (PHI) of Sweden will establish a Holographic Imaging Cytometry Program of Excellence. The new program is an application development hub and educational resource that...
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