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Home»Technology»Lasers smaller than a human hair emit doughnut-shaped light
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Lasers smaller than a human hair emit doughnut-shaped light

February 15, 2024No Comments1 Min Read
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Lasers smaller than a human hair emit doughnut-shaped light
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An artist’s impression of a hollow nanowire emitting doughnut-shaped laser light

Masato Takiguchi et al./ACS Photonics/American Chemical Society 2024

Tiny, hollow wires can produce doughnut-shaped laser light that could be used to levitate small objects or transmit information.

Conventional lasers typically make beams that appear as a single, small point of light when they hit a surface. But for some novel communication technologies that use light to transfer information, it can be better to use lasers that produce hollow beams like a drinking straw, which appear as a ring of light when they hit a surface.

Such hollow laser…

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See also  ‘Artificial synapse’ could make neural networks work more like brains
doughnutshaped emit hair human Lasers light smaller
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