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‘Twistoptics’ produces a tunable nonlinear optical response

04 Apr 2021
Twistoptics
Two slabs of boron nitride crystals are dynamically twisted with respect to each other. At certain angles, the incoming laser light can be efficiently converted to higher energy light, as a result of micromechanical symmetry breaking. (Courtesy: Nathan R Finney and Sanghoon Chae/Columbia Engineering)
Researchers in the US have shown that 2D materials can be used to create tunable optical second-harm

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