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Nonlinear optics

Diffraction cancellation

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The unusual nonlinear optical properties of rapidly cooled disordered ferroelectric crystals allow beam spreading to be completely suppressed, irrespective of the beam width and intensity, offering potentially important applications in imaging and all-optical beam control.

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Figure 1: Diffraction cancellation in a rapidly cooled KTN:Li crystal containing a disordered set of electrically polarized nanoregions (note that the nanoregions shown here have been enlarged and are not to scale).

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Sukhorukov, A. Diffraction cancellation. Nature Photon 5, 4–5 (2011). https://doi.org/10.1038/nphoton.2010.299

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