We present temporal quadratic solitons in doubly resonant temporal dispersive optical parametric oscillators without a walk-off in numerical simulations. In frequency domain, these cavity solitons correspond to coherent dual-combs with smooth envelopes in half-harmonic and pump fields. We also investigate the soliton existence region, and the soliton behavior with parameters in this cavity system. We believe our work offers valuable insights into the practical generation of quadratic soliton combs in optical parametric oscillators.

中文翻译：

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双谐振色散光学参量振荡器中的二次孤子梳

我们在双共振时间色散光学参量振荡器中呈现时间二次孤子，而没有数值模拟中的走离。在频域中，这些腔孤子对应于在半谐波和泵浦场中具有平滑包络的相干双梳。我们还研究了孤子存在区域，以及该腔系统中具有参数的孤子行为。我们相信我们的工作为光学参量振荡器中二次孤子梳的实际生成提供了宝贵的见解。