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Near-octave-spanning breathing soliton crystal in an AlN microresonator

机译：ALN微驻留器中的近倍频跨越呼吸孤子晶体

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摘要

The soliton crystal (SC) was recently discovered as an extraordinary Kerr soliton state with regularly distributed soliton pulses and enhanced comb line power spaced by multiples of the cavity free spectral ranges (FSRs), which will significantly extend the application potential of microcombs in optical clock, signal processing, and terahertz wave systems. However, the reported SC spectra are generally narrow. In this Letter, we demonstrate the generation of a breathing SC in an aluminum nitride (AlN) microresonator (FSR similar to 374 GHz), featuring a near-octave-spanning (1150-2200 nm) spectral range and a terahertz repetition rate of similar to 1.87 THz. The measured 60 fs short pulses and low intensity-noise characteristics confirm the high coherence of the breathing SC. Broadband microcombs with various repetition rates of similar to 0.75, similar to 1.12, and similar to 1.5 THz were also realized in different microresonators of the same size. The proposed scheme shows a reliable design strategy for broadband soliton generation with versatile dynamic control over the comb line spacing. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
机译：孤子晶体（SC）是最近发现的一种特殊的克尔孤子态，具有规则分布的孤子脉冲和由多个无腔光谱范围（FSR）隔开的增强的梳状线功率，这将显著扩展微梳在光学时钟、信号处理和太赫兹波系统中的应用潜力。然而，报道的SC光谱通常很窄。在这封信中，我们演示了在氮化铝（AlN）微谐振器（类似于374 GHz的FSR）中产生呼吸SC，具有近倍频程（1150-2200 nm）的光谱范围和类似于1.87太赫兹的太赫兹重复率。测量的60 fs短脉冲和低强度噪声特性证实了呼吸SC的高相干性。在相同尺寸的不同微谐振器中，还实现了具有类似于0.75、类似于1.12和类似于1.5太赫兹的不同重复率的宽带微谐振器。该方案为宽带孤子的产生提供了一种可靠的设计策略，具有对梳状线间距的多功能动态控制。由光学学会根据知识共享署名4.0许可证的条款出版。

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  • 来源
    《Optics Letters》 |2021年第14期|共4页
  • 作者

    Weng Haizhong; Afridi Adnan Ali; Liu Jia; Li Jing; Dai Jiangnan; Ma Xiang; Zhang Yi; Lu Qiaoyin; Guo Weihua; Donegan John F.;

  • 作者单位

    Trinity Coll Dublin Sch Phys CRANN Dublin 2 Ireland;

    Trinity Coll Dublin Sch Phys CRANN Dublin 2 Ireland;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect 1037 Luoyu Rd Wuhan 430074 Peoples R China;

    Trinity Coll Dublin Sch Phys CRANN Dublin 2 Ireland;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect 1037 Luoyu Rd Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect 1037 Luoyu Rd Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect 1037 Luoyu Rd Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect 1037 Luoyu Rd Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect 1037 Luoyu Rd Wuhan 430074 Peoples R China;

    Trinity Coll Dublin Sch Phys CRANN Dublin 2 Ireland;

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  • 正文语种 eng
  • 中图分类 计量学;光学;
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