Nonlinear optics

Nonlinear optics is the study of how intense light interacts with matter. The optical response of a material usually scales linearly with the amplitude of the electric field. At high powers, however, the material properties can change more rapidly. This leads to nonlinear effects including self-focusing, solitons and high-harmonic generation.

Latest Research and Reviews

News and Comment

  • News & Views |

    The use of on-chip nonlinear waveguides that can convert 1.5-μm wavelength signals into the 2-μm region brings new opportunities for expanding the bandwidth of optical communications.

    • Fatima Gunning
    •  & Brian Corbett
    Nature Photonics 16, 744-745
  • News & Views |

    All-optical devices hold promise as a platform for ultralow-power, sub-nanosecond photonic classical and quantum information processing. Measurements of the dynamics of a single photon switch unveil the quantum correlations at the root of its operation.

    • Victoria A. Norman
    •  & Marina Radulaski
    Nature Physics 18, 1139-1140
  • News & Views |

    Multilayered ferroelectric NbOI2 crystals with sub-100-nm thickness exhibit efficient second harmonic generation, paving the way for on-chip nonlinear optical components.

    • Rupert F. Oulton
    • , Jefferson Flórez
    •  & Alex S. Clark
    Nature Photonics 16, 611-612
  • News & Views |

    Breaking reciprocity at the nanoscale can produce directional formation of images due to the asymmetric nonlinear optical response of subwavelength anisotropic resonators. The self-induced passive non-reciprocity has advantages compared to magnet or time modulation approaches and may impact both classical and quantum photonics.

    • Christos Argyropoulos
    Nature Photonics 16, 556-557