A new beam pattern devised by University of Rochester researchers could bring unprecedented sharpness to ultrasound and radar images, burn precise holes in manufactured materials at a nano scale—even ...
Visitors to New York’s Central Park have one less sight to see this summer, as the its 69-foot-tall Egyptian obelisk, popularly-known as Cleopatra’s Needle, is currently shrouded in scaffolding as it ...
A new beam pattern devised by University of Rochester researchers could bring unprecedented sharpness to ultrasound and radar images, burn precise holes in manufactured materials at a nano scale -- ...
Researchers have developed a new method for flexibly creating various needle-shaped laser beams. These long, narrow beams can be used to improve optical coherence tomography (OCT), a noninvasive and ...
Needle-shaped laser beams (NBs) featuring a long and narrow localization of photons can potentially allow non-diffracting pulses with undistorted temporal profiles. Using this kind of pulse in ...
Top: This shows a micrograph and diagram of the metallic gratings that produce the needle beam. Bottom: This is an approximation of the experimental setup. A laser is focused from the glass substrate ...
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