论文标题
使用相位噪声的相干长度控制非线性流氓波的形成
Controlling nonlinear rogue wave formation using the coherence length of phase noise
论文作者
论文摘要
光场上存在的弱相噪声可以通过自我关注的非线性并形成强烈的“流氓波”特征来扩增。在这里，我们研究了这种相噪声的相干长度（或晶粒尺寸）对存在自我关注非线性的可能性形成的可能性的影响。我们表明，尽管当相干长度仅略小，而当相干长度明显小于梁直径时，但流氓波的可能性随激光功率而增加，但可能会受到激光功率变化的影响。我们的研究提供了对非线性与相位不稳定性相互作用的洞察力，并且在诸如降低湍流引起的激光束的破裂效果之类的应用中可能很有用，并开发了辐射限制器以降低光束中的聚焦功率。
Weak phase noise present on an optical field can be amplified by a self-focusing nonlinearity and form intense "rogue wave" features. Here, we study the effect of the coherence length (or grain size) of this phase noise on the likelihood of rogue wave formation in the presence of a self-focusing nonlinearity. We show that while the likelihood of rogue wave formation increases with laser power when the coherence length is only slightly smaller that the beam diameter, the likelihood is minimally affected by change in laser power when the coherence length is significantly smaller than the beam diameter. Our study provides insight into the interaction of nonlinearity with phase instabilities on a field, and could be useful in applications such as reducing the effect of turbulence-induced breakup of intense laser beams, and developing radiance limiters to reduce the focusable power in a beam.
