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New class of 3-D optical cavities demonstrated
BERKELEY, Calif. – Nanoscale three-dimensional optical cavities made from metamaterials can generate the most powerful nanolaser beams to date. This new class of optical cavities, with remarkable electromagnetic properties, holds promise for a variety of other technologies, including photonic integrated circuits, LEDs, quantum optics, nonlinear optics and optical sensing. Optical cavities are the major components of most lasers. Light confined within these cavities reflects back and forth between two...
Plasma’s potential for photolithography pursued
SEATTLE – Work over the past decade to harness the energy-generating mechanism of the sun has yielded bright high-energy light needed to etch smaller microchips. The microchip industry now uses 193-nm UV light, which cannot etch circuits any smaller than...
Portrait of a single atom
BRISBANE, Australia – The shadow of a single atom was photographed for the first time using a superhigh-resolution microscope, a discovery that could help scientists confirm their understanding of atomic physics and advance quantum computing. “We have reached...
Robotic camera mimics eye movement
ATLANTA – Piezoelectric materials that allow a robot’s camera eye to replicate the muscle motion of a human eye could help make safer, more effective robotic tools for MRI-guided surgery and robotic rehabilitation. The biologically inspired...
Terabits transmitted by twisted light
LOS ANGELES – Do you ever wish you could download that Netflix movie you’ve been dying to see in a matter of just a few seconds rather than those 15 long, grueling minutes, or watch the latest viral YouTube video without the hassle of buffering? Well, your...
Limits of Plasmonic Enhancement Measured
DURHAM, N.C., & LONDON, Aug. 31, 2012 — Photonic interactions have been measured on the scale of a single atom for the first time. The ability to quantify the unique properties of light gives physicists a "road map" for precisely controlling its scattering in metal-based devices such as...
X-ray, Optical Wave Mix Probes Atomic-Scale Light
BERKELEY, Calif., Aug. 31, 2012 — A long-awaited technique for watching how light interacts with matter on the atomic scale was demonstrated by mixing x-ray and optical lightwaves. Vision, photosynthesis and solar cells are a few examples of the ways light changes matter, but how...
Physicist Receives Early Career Award
MANHATTAN, Kan., Aug. 30, 2012 — A planned research project that could speed up communications technology has earned physicist Matthias Kling an Early Career Research Program Award from the DoE. Kling, an assistant professor of physics at Kansas State University, will receive...
Surface Plasmons Enable Tunable Color Filters
SINGAPORE, Aug. 30, 2012 — Combining a thin, perforated gold film with a liquid crystal layer makes a tunable, efficient color filter, engineers at A*STAR, the Agency for Science, Technology and Research in Singapore, report. Flat panel displays and many digital devices...
Laser Surgery Pioneer Isaac Kaplan Dies
TEL AVIV, Israel, Aug. 29, 2012 — Professor Isaac Kaplan, a pioneer in the creation of the first carbon dioxide laser for general surgery and founder of the International Society for Laser Surgery and Medicine, has died. He was 93. Kaplan was professor emeritus of surgery and past...
Merging Microscopy Methods Sharpens Brain Imaging
SESTO FIORENTINO, Italy, Aug. 28, 2012 — Technology that combines the best features of two microscopy methods yields images 100 percent sharper than those acquired through conventional light-sheet-based microscopy (LSM).
Microscope Addresses the Need for Speed
LEICESTER, England, Aug. 28, 2012 — A technology used in projectors can create a high-resolution image 100 times faster than conventional microscopy equipment, which can be too slow to clearly document speedy biological processes.
3-D Photografting Grows Bio Tissue
VIENNA, Aug. 27, 2012 — Photografting, a new form of three-dimensional printing that uses lasers to precisely attach molecules at specific places in a material, could soon make it possible to grow biological tissue or to create microsensors.
Lasers for Standoff Sensing Improved
EVANSTON, Ill., Aug. 27, 2012 — A new resonator design that controls both wavelength and beam quality enables the purest, brightest, and most powerful beams ever from a single-mode infrared quantum cascade laser. The work improves the accuracy of the devices, critical for boosting...
Supersensor Detects Single Virus Samples
NEW YORK, Aug. 27, 2012 — Exploiting an odd behavior of light boosts a biosensor platform’s sensitivity by nearly 70 times, allowing it to detect a single sample of the smallest known viruses.
Nanocrystal Films Promising for Photonic Circuits
CAMBRIDGE, Mass., Aug. 24, 2012 — A new process for patterning defect-free nanocrystal films with nanometer precision could advance photonic devices and basic physics research.
Phase-Shifted Flat Lens Creates Perfect Image
CAMBRIDGE, Mass., Aug. 24, 2012 — By moving the phase shifting of light to the surface of a lens instead of creating phase delays as it propagates through a material, Harvard engineers have created an ultrathin, flat lens that could potentially replace bulk components in optical...
Semiconductor Laser Sets Surface-Emission Record
DARMSTADT, Germany, Aug. 23, 2012 — A semiconductor laser that emits light over a wavelength range of 100 nm sets a record for a single semiconductor laser and could enable more efficient telecommunications networks and gas sensors.
Glasses-Free 3-D on the Horizon
SEOUL, South Korea, and BERLIN, Aug. 22, 2012 — Since the early days of cinema, engineers and scientists have tried to create a way to add the illusion of depth to projected images. Even with the latest technology, cumbersome 3-D glasses are needed to get the full 3-D experience.
Mars Rover’s Laser Zaps First Target
LOS ALAMOS, N.M., Aug. 22, 2012 — NASA’s Mars rover Curiosity fired its laser for the first time on Mars this week, hitting a fist-sized rock with 30 pulses, each delivering more than 1 million watts of power. The achievement was just the beginning of a two-year mission that...
Optical Microscope Exceeds Diffraction Limit
AMSTERDAM, LONDON and BARCELONA, Spain, Aug. 22, 2012 — An optical microscope that combines electronic excitation and optical detection has broken Abbe’s diffraction limit. The nanoscale imaging method offers insight into how light and complex photonic materials interact and could lead to enhanced...
Guidelines Needed to Advance Diagnostic Accuracy
NEW YORK, Aug. 21, 2012 — Tiny mechanical microscopes — those that can see inside single living cells — increasingly are being used to diagnose illness in hard-to-reach areas of the body, but specialists say they need improved, standardized guidelines to advance...
Laser’s Cousin Comes In from the Cold
TEDDINGTON, England, Aug. 21, 2012 — A new solid-state maser capable of operating at room temperature could enable more sensitive medical instruments, improved chemical sensors, and better radio telescopes, among other applications.
Quantum Effects Observed in Optomechanical System
BERKELEY, Calif., Aug. 21, 2012 — The first direct observations of distinctly quantum optical effects — amplification and squeezing — have been recorded in an optomechanical system. The step forward points the way to low-power quantum optical devices and enhanced...
Method ‘Tags and Tracks’ DNA Looping
DALLAS, Aug. 20, 2012 — A “tag and track” method using fluorescent molecules not only sheds light on how DNA loops form, but also might be adapted to screen drugs for effectiveness against certain viruses that shuffle genetic material, such as HIV.

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