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Nonlinear Near-Field Optical Microscopy Images Evanescent Waves in Real Time

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HAIFA, Israel, April 19, 2021 — Researchers from Technion-Israel Institute of Technology demonstrated an approach for obtaining images of evanescent waves that uses nonlinear wave-mixing. The microscopy method allowed the researchers to fully reconstruct the electromagnetic field of the evanescent waves and to perform real-time monitoring of wave-pattern changes. Nonlinear wave-mixing combines two or more light beams, including one that is very intense, to generate a new electromagnetic wave of a different color; the phenomenon commonly occurs in semiconductors, dielectrics, and metals. The Technion researchers mixed...Read full article

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