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light beam News
Nonlinear Multimode Waveguide for Flip-Flopping Azimuthons Demonstrated
XI’AN, China, Aug. 13, 2020 — A research team from Xi’an Jiaotong University has demonstrated weakly nonlinear waveguides that guarantee the stable propagation of vortex beams known as azimuthons. The research may have applications in encoding and encrypting optical...
Simulations Shed Light on Dark Solitons
XI’AN, China, March 20, 2012 — The occurrence of multiple solitary optical waves, called dark photovoltaic spatial solitons, has now been described in a theoretical model using the beam propagation method.
Masking moments in time by splitting light
ITHACA, N.Y. – A technique that employs a split-time lens to break light into its slower (red) and faster (blue) components creates a temporal gap, albeit at the picosecond timescale, engineers at Cornell University have reported. The optical fiber-based...
Time Bandits: Temporal Cloaking Hides Events
ITHACA, N.Y., Jan. 11, 2012 — A new "time cloak" technique is a step toward the development of spatio-temporal cloaking, say engineers at Cornell University. The optical-fiber based system uses a split-time lens to break light into its slower and faster components, creating a...
IBM: We’ll Chat with Holograms in 2015
ARMONK, N.Y., Jan. 3, 2011 — In the next five years, we will be able to interact with 3-D holograms of our friends in real time, batteries will "breathe" air to power our devices, commutes will be personalized, and you won’t need to be a scientist to save the planet....
Holding onto a Pinch of Light
TEL AVIV, Israel, July 16, 2010 — A new tool developed by Tel Aviv University, Holographic Optical Tweezers (HOTs) use holographic technology to manipulate up to 300 nanoparticles at a time, such as beads of glass or polymer, that are too small and delicate to be handled with...
Designer molecules promise all-optical processing
ATLANTA – Supporters of all-optical switching say it will allow dramatic speed increases in data communications by eliminating the need to convert photonic signals to electronic signals – and back. All-optical processing – switching light using...
GM Developing Next-Gen Windshield
WARREN, Mich., March 22, 2010 — Imagine a fog-shrouded morning when you cannot see the end of your driveway, let alone the road on which you are about to drive. Wouldn’t it be great if the sides of the road could magically appear on your windshield? It’s not magic, and it’s not...
Light Focused Through Opaques
PARIS, March 11, 2010 — Materials such as paper, paint, and biological tissue are opaque because the light that passes through them is scattered in complicated and seemingly random ways. A new experiment conducted by researchers at the City of Paris Industrial Physics and...
3-D TV, Bio-optics Hot at FiO
SAN JOSE, Calif., Oct. 2, 2009 -- The future of 3-D TV, laser fusion and exawatt lasers, bio-optics breakthroughs and illumination-aware imaging for producing better robotic vision are just a few of the hot topics to be discussed during the Optical Society of America's (OSA)...
Light's Might Harnessed
PASADENA, Calif., June 5, 2009 – A nanoscale device created at the California Institute of Technology exploits the mechanical properties of light to create an optomechanical cavity in which interactions between light and motion are greatly strengthened and enhanced. It harnesses...
Tissue Made Transparent
PASADENA, Calif., Feb. 13, 2008 -- A new optical trick that counteracts the scattering of light through humans could one day make biological tissue as see-through as a jellyfish under diagnostic and therapeutic imagers. "The reason a person is not transparent is that their tissues...
Bird Flu Biosensor is Better
ATLANTA, Sept. 28, 2007 -- A new, portable biosensor based on interferometry is more sensitive and days faster than commercially available tests for avian influenza ("bird flu"), and can also identify different strains simultaneously. “We can do real-time monitoring of...
NIH Supports Microscopy
WALTHAM, Mass., and NEW HAVEN, Conn., Sept. 27, 2007 -- The National Institutes of Health (NIH) has awarded more than $5 million to two researchers working separately to advance the study of cancer, diabetes and neurological diseases by developing new microscopy techniques. NIH Director Elias A....
Atomic Force Microscopy Acquisition Rates Accelerate
Mar 1, 2005 — Because they are mechanical devices, conventional atomic force microscopes (AFMs) can see fine details but not fast ones. The instruments make nanoscale measurements by dragging a sharp stylus across a sample, and their readout involves tracking the...
Bessel Beams Enable Better Interferometry
Feb 1, 2005 — Researchers at Université Laval in Quebec City have shown that, in some situations, one arm is better than two. They have demonstrated a Bessel beam interferometer that does not require a stable reference arm, promising a simpler, less-expensive and...
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April 2024
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