Efficiency of pulse pumped soliton microcombs
Efficiency of pulse pumped soliton microcombs
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DOI：
10.1364/optica.443060
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发表时间：
2022-02-20
期刊：
影响因子：
10.4
通讯作者：
Vahala, Kerry
中科院分区：
文献类型：
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作者：
Li, Jiang;Bao, Chengying;Vahala, Kerry
在相干泵浦微腔中锁紧时间孤子模式是实现频率梳系统小型化的一条很有前途的途径。然而，由此产生的微型梳子的功率效率通常相当低。通过脉冲抽运产生孤子可以提高转换效率（到目前为止，高达8%）。在此，我们研究了转换效率，并报道了使用扫描激光的单孤子转换效率高达54%，稳态单孤子转换效率高达34%。我们使用拉格朗日方法建立了泵浦脉冲中效率和孤子时间位置的解析表达式，我们的测量揭示了在连续泵浦中没有看到的孤子功率和效率的调谐依赖特征。我们的实验证实的效率表达式将有助于理解脉冲泵浦系统的优点和局限性。(C) 2022年美国光学学会根据OSA开放获取出版协议的条款
Temporal soliton mode locking in coherently pumped microcavities is a promising route towards miniaturized frequency comb systems. However, the power efficiency of the resulting microcombs is usually quite low. Soliton generation by pulse pumping provides away to increase conversion efficiency (so far, as high as 8%). Here, we study conversion efficiency and report a single-soliton conversion efficiency as high as 54% using a scanning laser, as well as a steady-state single-soliton conversion efficiency as high as 34%. We use the Lagrangian approach to develop analytical expressions for efficiency and soliton temporal placement within the pumping pulse, and our measurements reveal features in the tuning dependence of soliton power and efficiency not seen in continuous pumping. Our experimentally confirmed expressions for efficiency will be useful in understanding advantages and limitations of pulse pumped systems. (C) 2022 Optical Society of America under the terms of the OSA Open Access Publishing Agreement