论文标题
液体中激光诱导的热轮廓的完整数值描述，以解释复杂的自我诱导的衍射模式
Complete numerical description of the laser-induced thermal profile in a liquid, to explain complex self-induced diffraction patterns
论文作者
论文摘要
过去，使用简单的传导和对流条件对带有传热的流体中的激光传播进行了建模，从而产生了不准确的预测。在这里，我们提出了一项详细的数值研究，描述了流体的热谱及其与激光的相互作用。此外，我们评估了通过流体撞击泵束撞击的远场中的衍射场，而垂直于传播方向获得的干涉模式，以测试我们的模型。实验结果与数值模拟之间的直接比较，可以完全了解从激光到液体的能量转移以及随后对激光传播的影响。通过我们的建模观察并解释了空间自相度调制和从小相衍射到异常控制衍射以及衍射振荡的传播控制。
In the past, laser propagation in a fluid with heat transfer has been modeled using simplistic conduction and convection conditions yielding inaccurate predictions. Here we present a detailed numerical study describing the thermal profile of the fluid and its interaction with the laser. Furthermore, we evaluate the diffraction field in the far field produced by a pump beam impinging in the fluid and the interferometric pattern obtained normal to the propagation direction to test our model. Direct comparison between experimental results and numerical simulation allows for a complete understanding of the energy transfer from the laser to the liquid and the subsequent effect on the laser propagation. Spatial self-phase modulation and propagation control from small-phase diffraction to aberration-controlled diffraction and up to diffraction oscillation are observed and explained with our modeling.
