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χ(2) nonlinear photonics in integrated microresonators.

Pengfei Liu1, Hao Wen1, Linhao Ren1

  • 1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.

Frontiers of Optoelectronics
|July 17, 2023
PubMed
Summary
This summary is machine-generated.

This review explores second-order (χ(2)) optical nonlinearity in integrated microresonators. It highlights novel materials and devices for enhanced light manipulation, overcoming silicon

Keywords:
Electro-optic effectFrequency conversionIntegrated microresonatorsSecond-order nonlinearity

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Area of Science:

  • Photonics and optical engineering
  • Materials science for nonlinear optics

Background:

  • Second-order (χ(2)) optical nonlinearity is crucial for light modulation and generation in photonic devices.
  • Integrated microresonators offer excellent photon confinement and lifetime, ideal for nonlinear optical studies.
  • Centrosymmetric silicon materials lack intrinsic χ(2) nonlinearity, necessitating alternative platforms.

Purpose of the Study:

  • To provide a comprehensive review of second-order nonlinear optical effects in integrated microresonators.
  • To summarize advancements in novel materials and devices leveraging χ(2) nonlinearity.
  • To discuss future prospects and challenges in this field.

Main Methods:

  • Introduction to the fundamental principles of second-order nonlinear optical effects.
  • Review of various χ(2) nonlinear optical materials, detailing their properties.
  • Discussion of functional devices developed using these materials within microresonators.

Main Results:

  • Identification and characterization of diverse material platforms exhibiting significant χ(2) nonlinearity.
  • Demonstration of functional devices utilizing these materials for light manipulation in microresonators.
  • Analysis of the progress and potential of integrated microcavity photonics based on χ(2) effects.

Conclusions:

  • Novel materials have been developed to overcome the limitations of silicon for χ(2) nonlinear optics.
  • Integrated microresonators are a promising platform for harnessing second-order nonlinear optical effects.
  • Further research is needed to address challenges and unlock the full potential of these technologies.