Ultrafast Dark Spatial Solitary Wave Propagation Phenomena: Physics and Device Applications

近年来，暗空间孤子的传输在 各种不同的材料系统 由PI观察。 这些系统包括钠 蒸汽，各种热液体，和散装 半导体ZnSe和GaAs。 描述的工作 在这项提案中， 理论和数值的努力，并代表了一个 全面的计划，旨在了解 暗空间传播的基本性质 一般自散焦孤子本征模 非线性光学介质 我们会详细调查 这些孤子的碰撞和稳定性 当他们受到实验性的 扰动 这种扰动可能包括损失 (both线性和非线性吸收），偏差 从简单的克尔定律依赖的真实的部分 的折射率，和不稳定性引起的 在维度上的差异， 实验情况和一个典型的假设 对这个问题的理论处理。 在 除了批量进行的实验外 非线性光学介质，一系列实验 旨在研究传播特性 将进行暗表面波测试。 黑暗 表面波是一种新的波， 与暗空间密切相关PI 孤子，并预计有应用在 非线性集成光学领域。

Recently, the propagation of dark spatial solitons in a variety of different material systems has been observed by the PI. These systems include sodium vapor, various thermal liquids, and the bulk semiconductors ZnSe and GaAs. The work described in this proposal will consist of experimental, theoretical, and numerical efforts, and represents a comprehensive program designed to understand the fundamental nature of the propagation of dark spatial soliton eigenmodes in general self-defocusing nonlinear optical media. We will investigate in detail the collision and stability properties of these solitons when they are subjected to experimental perturbations. Such perturbations may include loss (both linear and nonlinear absorption), deviation from the simple Kerr-law dependence of the real part of the refractive index, and instabilities induced by the difference in dimensionality between the experimental situation and the one typically assumed for theoretical treatments of the problem. In addition to the experiments to be performed in bulk nonlinear optical media, a series of experiments designed to investigate the propagation characteristics of dark surface waves will be performed. Dark surface waves are a new kind of wave discovered by the PI which are closely related to dark spatial solitons and are expected to have application in the area of nonlinear integrated optics.