High-Power Mid-IR Few-Cycle Frequency Comb from Quadratic Solitons in an Optical Parametric Oscillator,Laser & Photonics Reviews

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High-Power Mid-IR Few-Cycle Frequency Comb from Quadratic Solitons in an Optical Parametric Oscillator
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2022-08-07 , DOI: 10.1002/lpor.202200453
Mingchen Liu ₁ , Robert M. Gray ₁ , Arkadev Roy ₁ , Kirk A. Ingold ₂ , Evgeni Sorokin ₃ , Irina Sorokina ₄ , Peter G. Schunemann ₅ , Alireza Marandi ₁

Affiliation

Powerful and efficient optical frequency combs in the mid-infrared (MIR) spectral region are highly desirable for a broad range of applications. Despite extensive efforts utilizing various techniques, MIR frequency comb sources are still lacking power, efficiency, or bandwidth for many applications. Here, the generation of an intrinsically locked frequency comb source centered at 4.18 µm from an optical parametric oscillator (OPO) operating in the simulton regime is reported, in which formation of purely quadratic solitons leads to enhanced performance. Advantages of operation in the simulton regime in direct experimental comparisons to the conventional regime are shown, which are also supported by simulation and theory. 565 mW of average power, 900 nm of instantaneous 3 dB bandwidth, 350% slope efficiency, and 44% conversion efficiency are achieved, a performance that is superior to previous OPO demonstrations and other sources in this wavelength range. Here, a new avenue toward MIR frequency comb generation with high power and efficiency is opened, and the great potential of soliton generation based on quadratic nonlinearity in the MIR spectral region is suggested.

中文翻译：

光学参量振荡器中二次孤子的高功率中红外少周期频率梳

中红外 (MIR) 光谱区域中强大而高效的光学频率梳非常适合广泛的应用。尽管使用各种技术进行了广泛的努力，但对于许多应用而言，MIR 频率梳源仍然缺乏功率、效率或带宽。在这里，报告了从在 simulton 状态下运行的光学参量振荡器 (OPO) 以 4.18 µm 为中心的固有锁定频率梳源的生成，其中纯二次孤子的形成导致性能增强。在与传统制度的直接实验比较中，显示了在 simulton 制度中操作的优势，这也得到了模拟和理论的支持。565 mW 的平均功率，900 nm 的瞬时 3 dB 带宽，350% 的斜率效率，实现了 44% 的转换效率，这一性能优于之前的 OPO 演示和该波长范围内的其他光源。在这里，开辟了一条通往高功率和高效率 MIR 频率梳生成的新途径，并提出了 MIR 光谱区域中基于二次非线性的孤子生成的巨大潜力。

更新日期：2022-08-07

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