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Research & Technology News

Electrons in QDs Observed Absorbing, Emitting Light
DRESDEN, Germany, Oct. 1, 2012 — The special energy states of electrons confined in quantum dots were observed for the first time, a feat that could help exploit the unique properties of the nanoscale semiconductor materials for technological applications.
First nonpolar violet VCSEL could boost laser efficiency
SANTA BARBARA, Calif. – A violet nonpolar vertical-cavity surface-emitting laser (VCSEL) based on m-plane gallium nitride semiconductors has been reported and could lead to more optically efficient lasers for lighting, displays and sensors. Because VCSELs exhibit low...
Low-Power Nanotweezers May Benefit Cell Studies
URBANA-CHAMPAIGN, Ill., Oct. 1, 2012 — Low-power optical tweezers can trap, manipulate and analyze nanoparticles — including delicate biological samples — new work demonstrates.
New approach strengthens negative refraction
CAMBRIDGE, Mass. – An “extraordinarily strong” negative refractive index as large as -700 – more than 100 times larger than most previously reported – has been achieved in metamaterials using a technique developed by scientists at Harvard...
Semiconductor Etching Monitored with Light
CHAMPAIGN, Ill., Oct. 1, 2012 — An inexpensive, completely optical technique uses a special type of microscope to simultaneously etch features onto a semiconductor wafer’s surface while monitoring the entire process in real time with nanometer precision.
Single-photon beam could lead to quantum computers
CAMBRIDGE, Mass. – In a significant step toward quantum computing, scientists at MIT and Harvard University have identified a method that converts laser beams into streams of single photons in a controlled way. The discovery could lead to new quantum devices such as...
Smallest semiconductor laser breaks diffraction limit
AUSTIN, Texas – A plasmon-based laser too small to be seen by the naked eye emits continuous green wavelengths at low energy levels and cold temperatures while operating below the 3-D optical diffraction limit. Physicists at The University of Texas at Austin, in...
System simultaneously uses loss, gain
ERLANGEN, Germany – Light absorption or loss, usually seen as a disadvantage in optical metamaterials, actually can have useful applications. Physicists at Friedrich Alexander University Erlangen-Nuremberg borrowed a concept from quantum field theory in designing a new...
Toward an “unbreakable” message exchange
WÜRZBURG, Germany – Single particles of light produced and implemented into a quantum key distribution (QKD) link could pave the way for unbreakable communication networks. The single photons were produced by a collaboration of German scientists using two devices made...
Nanoparticles Enable Drug Activation by NIR Light
SINGAPORE, Sept. 28, 2012 — Nanoparticles that convert near-infrared to ultraviolet or visible light could help overcome the skin penetration limits of conventional photodynamic therapy.
SMART Scalpel Gives Surgeons Superhuman Precision
BALTIMORE, Sept. 28, 2012 — A new "smart" surgical tool equipped with a specialized optical fiber sensor can compensate for almost imperceptible hand tremors by making hundreds of precise position corrections each second — fast enough to keep a surgeon’s hand on...
Optical Mammography IDs Breast Cancer
MEDFORD/SOMERVILLE, Mass., Sept. 27, 2012 — A novel noninvasive optical imaging technique could offer doctors new ways both to identify breast cancer and to monitor a patient’s response to initial treatment.
Pioneering Photonics Institute to Celebrate 30 Years
NEW YORK, Sept. 26, 2012 — A pioneering center for photonic science and technology will mark its 30th anniversary next month.
Wearable Sensor Maps Disaster Areas on the Fly
CAMBRIDGE, Mass., Sept. 26, 2012 — A wearable sensor system that includes a stripped-down gaming camera and a laser rangefinder could give emergency responders a boost by digitally mapping hazardous environments on the fly.
Nanotubes Project Holograms
CAMBRIDGE, England, Sept. 25, 2012 — Holograms can be generated by harnessing the conductive and light-scattering qualities of carbon nanotubes, a development that could lead to crisper projections with a larger field of view.
OSA, China Partners Launch Photonics Research Journal
WASHINGTON, Sept. 25, 2012 — The Optical Society (OSA) will launch Photonics Research, a new peer-reviewed, open-access journal, in partnership with an optics institute and optics publisher in China, the society announced today. The first issue is scheduled to be published in...
Quantum Photonics Researcher Wins Engineering Challenge
BRISTOL, England, Sept. 25, 2012 — Quantum photonics research assistant Dr. Isobel Houghton of the University of Bristol has won the British Science Association’s Strictly Engineering challenge.
Moving Target Measured with Squeezed Light
TOKYO, Sept. 24, 2012 — A novel quantum mechanical squeezing technique that precisely tracks the phase of optical waveforms in motion has broken the standard limits for ultraprecise measurement by exploiting quantum lightwaves in a different way.
Scully Honored for Quantum Optics Research
WACO, Texas, Sept. 24, 2012 — Dr. Marlan O. Scully will be honored in October for his groundbreaking quantum optics research with the highest award given by The Optical Society.
Silicon-Erbium Chip Achieves 170 Gb/s
ENSCHEDE, Netherlands, Sept. 21, 2012 — The integration of silicon and an erbium-doped material on a single chip will amplify light at speeds up to 170 gigabits a second, says a doctoral student at the University of Twente who demonstrated a working prototype. On optical microchips, light...
Spectroscopic ‘Fingerprints’ Diagnose Brain Tumors
LANCASTER, England, Sept. 21, 2012 — A breakthrough in brain tumor diagnosis uses infrared and Raman spectroscopy to differentiate healthy from diseased tissue based on individual biochemical-cell “fingerprints.”
Biophotonics Researchers Receive Innovator Awards
LA JOLLA, Calif., Sept. 20, 2012 — Bjorn Lillemeier and Axel Nimmerjahn of the Waitt Advanced Biophotonics Center will each receive $1.5 million from the National Institutes of Health as two of only 51 recipients of the award that recognizes visionary scientific efforts.
Lasers Printed via Ink-Jet
CAMBRIDGE, England, Sept. 20, 2012 — Using everyday ink-jet technology, scientists have designed a process for "printing" an organic laser on virtually any surface. The development has wide-ranging possible applications, including biomedicine and displays.
With Laser, Electromagnetic Bottleneck ‘Shattered’
LOS ANGELES, SANTA BARBARA, Calif., and TALLAHASSEE, Fla., Sept. 20, 2012 — Using a high-power laser to amp up decades-old electron paramagnetic resonance spectrometers has yielded a more efficient tool for revealing details about the structure of targeted molecules.
EU Invests in Romania’s Nuclear Photonics Project
BRUSSELS, Sept. 19, 2012 — The European Commission approved on Tuesday nearly €180 million ($235 million) for a new laboratory in Romania that will study laser-based nuclear physics. The funding for Extreme Light Infrastructure - Nuclear Physics (ELI-NP) will be provided...

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