News and Views
Nature Photonics 2, 524 - 525 (2008)
doi:10.1038/nphoton.2008.165
Plasmonics: A sharper approach
Claire Gmachl1
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Claire Gmachl is in the Electrical Engineering Department at Princeton University, Olden Street, B326, Princeton, New Jersey 08544, USA.
e-mail: cgmachl@princeton.edu
Abstract
Laser beams have an intrinsic spread. Normally this spread is overcome using lenses or curved mirrors to focus the light, but this typically involves meticulous optical alignment. Researchers have now shown that a surface-plasmon technique can reduce the beam spread.
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