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Technology update

Oct 29, 2007

Nanoantenna funnels optical emission

A team led by Harvard professor Federico Capasso has combined a nanoscale optical antenna with a quantum cascade laser (QCL) to confine mid-infrared light to a resolution 100 times smaller than its wavelength. According to Capasso, the compact device is capable of resolving the chemical composition of surfaces and tissues with unprecidented detail, and could reduce the overall size of an infrared microscope dramatically by replacing bulky laser sources.

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