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‘Metamirror’ Doubles Incident Light Frequency

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A nanostructure produces nonlinear effects a million times greater than traditional, macroscale nonlinear crystals, according to a team of researchers from Texas and Germany. This “metamirror” could enable miniaturized laser systems and enhance chemical sensing, explosives detection and biomedical research. Incident light with intensity as small as that of a laser pointer strikes a 400-nm-thick nonlinear mirror and is reflected back at double its original frequency. Courtesy of the University of Texas at Austin. Part of the mirror is a 400-nm-thick semiconductor...Read full article

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