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Nanophotonics

Nanophotonics

Photon frequency doubler is controlled by light

21 Jan 2020
Frequency doubling
Doubling up: Georgia Tech researchers Kyu-Tae Lee (left) and Mohammad Taghinejad demonstrate frequency doubling on a slab of titanium dioxide using a red laser to create nonlinear effects with tiny triangles of gold. The blue beam shows the frequency-doubled light and the green beam controls the hot-electron migration. (Courtesy: Rob Felt/Georgia Tech)
A way of using light to convert a normal optical material into a frequency doubler has been develope

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Sam Jarman is a science writer based in the UK
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