Stability of laser cavity-solitons for metrological applications
Stability of laser cavity-solitons for metrological applications
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DOI：
10.1063/5.0134147
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发表时间：
2023-03-20
影响因子：
4
通讯作者：
Pasquazi, A.
中科院分区：
文献类型：
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作者：
Cutrona, A.;Rowley, M.;Pasquazi, A.
激光空腔孤子可以出现在由嵌套在放大光纤环路内的非线性微腔组成的系统中。这些状态具有鲁棒性和自涌现性，构成了一类非常适合于微梳生成的有吸引力的孤子。本文详细研究了单孤子的载波频率和重复频率的自由运行稳定性特性，这是开发鲁棒超快和高重复频率梳状源最合适的状态。我们在光载波和重复频率（即48.9 GHz）频率上实现了10（-9）阶的自由运行分数稳定性，栅极时间为1 s。重复率结果与最先进的（外部驱动）微梳源的性能相比较，载流子频率稳定性在现代自由运行光纤激光器的典型性能范围内。最后，我们证明了这些量可以通过调制激光泵浦电流和腔长来控制，为主动锁定和长期稳定提供了一条途径。
Laser cavity-solitons can appear in systems comprised of a nonlinear microcavity nested within an amplifying fiber loop. These states are robust and self-emergent and constitute an attractive class of solitons that are highly suitable for microcomb generation. Here, we present a detailed study of the free-running stability properties of the carrier frequency and repetition rate of single solitons, which are the most suitable states for developing robust ultrafast and high repetition rate comb sources. We achieve free-running fractional stability on both optical carrier and repetition rate (i.e., 48.9 GHz) frequencies on the order of 10(-9) for a 1 s gate time. The repetition rate results compare well with the performance of state-of-the-art (externally driven) microcomb sources, and the carrier frequency stability is in the range of performance typical of modern free-running fiber lasers. Finally, we show that these quantities can be controlled by modulating the laser pump current and the cavity length, providing a path for active locking and long-term stabilization.