论文标题
3D时域梁映射用于研究多模光纤中的非线性动力学
3D time-domain beam mapping for studying nonlinear dynamics in multimode optical fibers
论文作者
论文摘要
非线性多模纤维中光束传播的复杂时空动力学的表征需要开发高级测量方法，能够捕获光束图像的实时演变。我们提出了一种新的时空映射技术，该技术允许使用皮秒的时间分辨率直接检测，从重复的激光脉冲从空间样品的网格上获得的强度，从输出光束的放大图像中。通过使用此时间分辨的映射，我们提供了第一个明确的实验观察，对分级指数纤维模式之间的瞬时内部非线性耦合过程。
The characterization of the complex spatiotemporal dynamics of optical beam propagation in nonlinear multimode fibers requires the development of advanced measurement methods, capable of capturing the real-time evolution of beam images. We present a new space-time mapping technique, permitting the direct detection, with picosecond temporal resolution, of the intensity from repetitive laser pulses over a grid of spatial samples from a magnified image of the output beam. By using this time-resolved mapping, we provide the first unambiguous experimental observation of instantaneous intrapulse nonlinear coupling processes among the modes of a graded index fiber.
