Pure-quartic solitons.
Pure-quartic solitons.
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DOI：
10.1038/ncomms10427
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发表时间：
2016-01-29
影响因子：
16.6
通讯作者：
Husko C
中科院分区：
文献类型：
--
作者：
Blanco-Redondo A;de Sterke CM;Sipe JE;Krauss TF;Eggleton BJ;Husko C
时间光孤子由于其诱人的物理特性及其在超快光学和超连续谱产生中的应用，一直是人们研究的热点。传统的亮光孤子是反常群速度色散和自相位调制相互作用的结果。在这里，我们实验证明了一类完全由负四阶色散和自相位调制相互作用产生的亮孤子，即使在正常的群速度色散下也可以发生这种情况。我们给出了基本纯四次孤子的保形传输和高阶纯四次孤子的周期调制传输的实验和数值证据。我们得到了基本的纯四次孤子的近似形状，并发现它是令人惊讶的高斯型，这与我们的实验观测结果非常一致。在精确色散工程的推动下，我们的发现可能会在通信、频率梳和超快激光中得到应用。光孤子是传播不失真的脉冲。在这里，作者证明了一类孤子是由自相位调制与四次色散相互作用产生的，而不是与传统孤子中出现的二次色散相互作用产生的。
Temporal optical solitons have been the subject of intense research due to their intriguing physics and applications in ultrafast optics and supercontinuum generation. Conventional bright optical solitons result from the interaction of anomalous group-velocity dispersion and self-phase modulation. Here we experimentally demonstrate a class of bright soliton arising purely from the interaction of negative fourth-order dispersion and self-phase modulation, which can occur even for normal group-velocity dispersion. We provide experimental and numerical evidence of shape-preserving propagation and flat temporal phase for the fundamental pure-quartic soliton and periodically modulated propagation for the higher-order pure-quartic solitons. We derive the approximate shape of the fundamental pure-quartic soliton and discover that is surprisingly Gaussian, exhibiting excellent agreement with our experimental observations. Our discovery, enabled by precise dispersion engineering, could find applications in communications, frequency combs and ultrafast lasers. Optical solitons are pulses that propagate undistorted. Here, the authors demonstrate a class of soliton arising from the interaction of self-phase modulation with quartic dispersion, rather than with quadratic dispersion as occurs in conventional solitons.