• Advanced Photonics
  • Vol. 4, Issue 2, 020501 (2022)
Xiang Hao* and Cuifang Kuang*
Author Affiliations
  • Zhejiang University, College of Optical Science and Technology, State Key Laboratory of Modern Optical Instrumentation, Hangzhou, China
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    DOI: 10.1117/1.AP.4.2.020501 Cite this Article
    Xiang Hao, Cuifang Kuang. Towards extremely high-order optical nonlinearity at the nanoscale[J]. Advanced Photonics, 2022, 4(2): 020501 Copy Citation Text show less

    Abstract

    A recently developed strategy to generate optical nonlinearities from various emitters localized in multilayer core/shell optical nanocrystals represents significant progress and great potential.

    Nonlinear optics lie in the center of many optical technologies. As the superposition principle no longer holds, optical nonlinear response from materials frees many of the constraints in classical optics and has enabled a range of practical applications, from laser processing to quantum optics. Yet, irrespective of the advantages, the nonlinear response is typically observable at very high laser intensity. The photon avalanche (PA) effect is therefore exceptional, since it allows sufficiently weaker lasers for excitation. Unfortunately, PAs are mostly restricted to bulk materials and rely on cryogenic conditions,1 hindering their wide application.

    Copy Citation Text
    Xiang Hao, Cuifang Kuang. Towards extremely high-order optical nonlinearity at the nanoscale[J]. Advanced Photonics, 2022, 4(2): 020501
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