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polarization News
System Pushes Better Light Control
CAMBRIDGE, Mass., March 27, 2014 — More precise control of light could be on the horizon, prompting advances in solar photovoltaics, detectors for telescopes and microscopes, and privacy filters for display screens.
OSA Optics Program Inspires Students
WASHINGTON, Feb. 14, 2014 — The Optical Society (OSA) Foundation is working to inspire a new generation of science lovers through its Optics Suitcase program. The program, demonstrated for middle school students this week as part of OSA’s annual Winter Leadership event,...
IR Technique Sees Through Graphene Stacks
BUFFALO, N.Y., Nov. 22, 2013 — An IR technique identifies and characterizes individual graphene layers in a large stack, providing information on the electronic properties of each layer. Such information opens the possibility of graphene-based optical devices for communications,...
Nanostructured holograms control light’s intensity, phase, polarization
CAMBRIDGE, Mass. – Combining cutting-edge nanotechnology with holograms results in a novel way to change the intensity, phase and polarization of light rays. Researchers at Harvard’s School of Engineering and Applied Sciences (SEAS) used the holograms to create...
Nanostructured Holograms Control Light’s Intensity, Phase, Polarization
CAMBRIDGE, Mass., Aug. 21, 2013 — By combining cutting-edge nanotechnology with holograms, applied physicists at Harvard demonstrated a novel way for changing the intensity, phase and polarization of light rays.
Transistor Works with Light, Not Electricity
VIENNA, July 9, 2013 — An electrical charge applied to an ultrathin layer of material can change the polarization of terahertz light beams, creating the optical equivalent of an electrical transistor, its creators say.
Spin-controlled Photonics Could Streamline Communications Components
HAIFA, Israel, May 9, 2013 — A new class of metamaterials with the potential to control the spread of light more easily could help in the design of more streamlined components for communications technology. The components used today in communications technology are bulky and...
Light’s polarization states measured directly
ROCHESTER, N.Y., and OTTAWA, Ontario, Canada – There may be a way around Heisenberg’s famous Uncertainty Principle, a law of the quantum world that says precise measurement is impossible. The solution could be a method developed at the universities of Rochester and Ottawa that directly...
Waveguides Contain Spinning Photons
LONDON, April 24, 2013 — Electromagnetic waves in waveguides can now be guided in one direction by forcing photons to interact with circulating plasmon polaritons in the near field, or very close to the surface of a small metal nanostructure, an international study has...
Light’s Polarization States Measured Directly
ROCHESTER, N.Y., and OTTAWA, Ontario, Canada, March 4, 2013 — There may be a way around Heisenberg’s famous Uncertainty Principle, a law of the quantum world that says precise measurement is impossible.
Fishy Felon Breaks a Law of Physics
BRISTOL, England, Oct. 23, 2012 — A multilayer crystalline structure used by silvery fish to evade ocean predators bends the laws of physics and could be the key to developing better optical devices.
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.
Attopulses of Light Generated on Glass
GARCHING, Germany, June 15, 2012 — A new method that generates ultrashort attosecond bursts of light on a glass target will permit the highest resolution to date.
GFPs Measure Intracellular Heat
BARCELONA, Spain, May 29, 2012 — A quicker, more precise method that measures internal cell temperatures noninvasively using green fluorescent proteins (GFPs) could help scientists to learn more about cellular processes and to distinguish healthy cells from cancerous ones.
Tunable optical filter uses nanoantennas
CAMBRIDGE, Mass. – A new tunable color filter based on optical nanoantennas can precisely control color output, enabling its use for display and bioimaging applications and for marking currency. By precisely controlling the shape of the nanoantennas, engineers at...
Tunable Optical Filter Uses Nanoantennas
CAMBRIDGE, Mass., Feb. 27, 2012 — A new kind of tunable color filter that uses optical nanoantennas to obtain precise control of color output could be used to create invisible security tags to mark currency, and for display and biological imaging applications.
Tunable graphene device puts terahertz to work
BERKELEY, Calif. – A microscale graphene device that responds strongly to terahertz light and that can be precisely tuned is the first tool in a kit for putting terahertz light to work. At the heart of the device, developed by scientists at Lawrence Berkeley...
WOP, U Southampton Develop Z Polarizers
Nov 1, 2011 — Workshop of Photonics (WOP) of Vilnius, Lithuania, has collaborated with the Optoelectronics Research Centre (ORC) at the University of Southampton in the UK to develop a direct laser writing technique for producing radial polarization converters....
Novel Z polarizer benefits laser micromachining
VILNIUS, Lithuania – A new laser writing technique has been used to produce Z polarizers, or radial polarization converters, that can be used for laser machining, microscopy, optical tweezers and Raman spectroscopy systems. Workshop of Photonics has collaborated...
Spiraling Light Boosts Telecom Channels
NEW YORK, Aug. 29, 2011 — Physicists have mapped spiraling light that could help to harness untapped data channels in optical fibers, which could increase bandwidth and ease the burden on fiber optic telecommunications networks. “Being able to follow polarization and...
WOP, USouthampton Develop Z Polarizers
VILNIUS, Lithuania, Aug. 17, 2011 — Workshop of Photonics (WOP) has collaborated with researchers at the Optoelectronics Research Centre (ORC) at the University of Southampton to develop a direct laser writing technique for the production of radial polarization converters. Z...
Navigating the seas with polarized crystals
BUDAPEST, Hungary – You might think that seafaring Vikings who from 900 to 1200 AD traveled thousands of kilometers in the rough waters would have floated adrift on cloudy days. Without a magnetic compass, they often traveled in the long days of summer at high...
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...
To keep atoms spinning together, don’t let them relax
BERKELEY, Calif. – There’s a new world record, according to researchers who were able to preserve the spin-polarization of atoms in an alkali vapor for about 60 seconds at room temperature, roughly 100 times the previous best. During that time, atoms within the...
Entangled Light Beams Store Quantum Info
COPENHAGEN, Denmark, Nov. 10, 2010 — Quantum information has been stored using two entangled light beams, researchers at the Niels Bohr Institute at the University of Cophenhagen report. Quantum memory or information storage is a necessary element of future quantum communication...
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April 2024
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