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<p>Dissipative solitons in microresonators and associated optical frequency combs provide a compact, broadband and low-noise light source and frequency measurement tool. While dissipative Kerr cavity solitons have attracted substantial attention over the past decade, advances in integrated photonic material platforms exhibiting second-order (quadratic) nonlinearity have stimulated recent interest in dissipative quadratic solitons. Quadratic solitons allow researchers to engage with rich physics and enable frequency comb generation across spectral regions. This Review presents the different kinds of dissipative quadratic soliton and corresponding frequency combs, the experimental platforms that support their formation, their underpinning physics and mathematical models, and the new applications that they support. Future directions are discussed and contextualized within recent developments in nanophotonic material platforms with second-order nonlinearity.</p>

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Temporal solitons and frequency combs in quadratic resonators

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Nicolas Englebert,
  • Robert M. Gray,
  • Alireza Marandi,
  • Markku Vainio,
  • Zheng Gong,
  • Hong X. Tang,
  • Dmitry V. Skryabin

摘要

Dissipative solitons in microresonators and associated optical frequency combs provide a compact, broadband and low-noise light source and frequency measurement tool. While dissipative Kerr cavity solitons have attracted substantial attention over the past decade, advances in integrated photonic material platforms exhibiting second-order (quadratic) nonlinearity have stimulated recent interest in dissipative quadratic solitons. Quadratic solitons allow researchers to engage with rich physics and enable frequency comb generation across spectral regions. This Review presents the different kinds of dissipative quadratic soliton and corresponding frequency combs, the experimental platforms that support their formation, their underpinning physics and mathematical models, and the new applications that they support. Future directions are discussed and contextualized within recent developments in nanophotonic material platforms with second-order nonlinearity.