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Nonlinear optics

Three-in-one microscopy

Using extremely broadband ultrafast near-infrared pulses, scientists have demonstrated simultaneous second-harmonic-generation, third-harmonic-generation and four-wave-mixing microscopy, enabling a range of different structures and functional groups in a biological sample to be imaged at once.

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Figure 1: Strutural information of Caemorhabditis elegans can be extracted by simultaneous SHG, THG and FWM imaging modes at a microscope focus.

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Correspondence to Thomas Weinacht.

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Pearson, B., Weinacht, T. Three-in-one microscopy. Nature Photon 6, 78–80 (2012). https://doi.org/10.1038/nphoton.2011.347

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