WASHINGTON — 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 ...
Needle-shaped ice formed among cinders on the summit of a volcano in Hawaii. Photo by Alice Donovan Rouse via Unsplash Needle-shaped ice formed ”among the cinders” on the summit of a volcano in Hawaii ...
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 ...
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