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Generating UV from a light-speed mirror

May 6, 2013 By Leave a Comment
A laser pulse (red, bottom), liberates electrons (green) from the carbon atoms of a nanometer-thin foil and accelerates them to close to the speed of light. An infrared light pulse impinges on the electron layer from the opposite direction and reflects off the electron mirror as a light burst in the extreme ultraviolet with a duration of only a few hundred attoseconds. Image: Thorsten Naeser.

Researchers succeed in generating flashes of extreme ultraviolet radiation via the reflection from a mirror that moves close to the speed of light.

Filed Under: Photonics, Research Tagged With: , ,
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Zinc oxide can be used for UV lasers, LEDs

May 2, 2013 By Leave a Comment

Researchers have solved a long-standing materials science problem, making it possible to create new semiconductor devices using zinc oxide.

Filed Under: Electronics research, Research Tagged With: , , , , ,
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Writing data with an X-ray laser

April 9, 2013 By Leave a Comment
A look inside the RCI sample chamber while researchers close up the chamber for vacuum for an experiment at LCLS. Image: Diling Zhu/SLAC.

Using laser light to read and write magnetic data by quickly flipping tiny magnetic domains could help keep pace with the demand for faster computing devices.

Filed Under: Electronics research, Photonics, Research Tagged With: , , , ,
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Cooling semiconductors using only light

February 11, 2013 By Leave a Comment
This shows semiconductor material, cadmium sulfide, being cooled using a laser beam in professor Xiong Qihua's experiment.

Nanyang researchers take group II-VI semiconductor cadmium sulfide from 20 to -20 degrees C in major breakthrough.

Filed Under: Electronics research, Photonics, Research Tagged With: , , , ,
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Laser scattering technique sheds light on the strength of spider silk

February 5, 2013 By Leave a Comment
Female Nephila clavipes on her web. The web was characterized using Brillouin spectroscopy to directly and non-invasively determine the mechanical properties. Image: Jeffery Yarger.

Non–invasive laser light scattering technique used to uncover the elastic properties of silk from four different spider species.

Filed Under: Polymers, Research Tagged With: , , , , ,
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Integrated carbon nanotubes improve laser power measurement

February 1, 2013 By Leave a Comment
The circular patch of carbon nanotubes on a pink silicon backing is one component of NIST’s new cryogenic radiometer, shown with a quarter for scale. Gold coating and metal wiring has yet to be added to the chip. The radiometer will simplify and lower the cost of disseminating measurements of laser power. Image: Tomlin/NIST.

NIST make “play for leadership in laser power measurements” with new chip design.

Filed Under: Industry, Lasers & Optics, Nano, Photonics, Research, Testing & Metrology Tagged With: , , ,

Nanoparticles reach new peaks

January 14, 2013 By Leave a Comment
Different types of nanoparticles – in this case, shells, rods and solid spheres – mixed together can be activated individually with pulsed laser light at different wavelengths, according to researchers at Rice University. The tuned particles’ plasmonic response, enhanced by nanobubbles that form at the surface, can be narrowed to a few nanometers under a spectroscope and are easily distinguishable from each other. Image: Lapotko Group/Rice University.

Rice University researchers show short laser pulses selectively heat gold nanoparticles.

Filed Under: Nano, Research Tagged With: , , , ,
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Silicon lasers for the terahertz spectral range

December 19, 2012 By Leave a Comment
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Stimulated emission between impurity levels in silicon is a promising source of terahertz laser radiation.

Filed Under: Photonics, Research Tagged With: , ,
PDFLink to the original paper on Wiley Online Library

Potential cancer treatment from Rice University

December 3, 2012 By Leave a Comment
After the laser pulse, red-stained cells show evidence of massive damage from exploding nanobubbles, while blue-stained cells remained intact, but with green fluorescent dye pulled in from the outside. Image courtesy Plasmonic Nanobubble Lab/Rice University.

Researchers at Rice University have found a way to kill some diseased cells and treat others in the same sample at the same time.

Filed Under: Healthcare research, Nano, Research Tagged With: , , , ,
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Carbon nanotubes and lasers help to visualize blood flow

December 3, 2012 By Leave a Comment
These images of a mouse's blood vessels show the difference in resolution between traditional near-infrared fluorescence imaging (left) and Stanford's new NIR-II technique (right).

New fluorescence imaging technique allows researchers to view pulsing blood vessels of living animals with unprecedented clarity.

Filed Under: Carbon, Healthcare research, Nano, Photonics, Research Tagged With: , , ,
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