Propagation of Light in Photonic Band Structure Materials

周期介质阵列中的光子带结构效应将通过光谱、干涉测量和光散射测量在可见光和近红外波段进行研究。将继续研究由微球介电粒子制备的胶体晶体，重点是更充分地了解它们的缺陷状态。该项目的主要新举措将是发展光聚合方法，用于制造适合研究线性和非线性光学效应和可能的器件应用的光子带隙结构。这种方法将使用光学显微镜与激光激发相结合，并且应该比通过其他方法制造所需的光子结构提供优势。光子带隙晶体属于一类新的材料，在这种材料中，电磁波在一定频率范围内被禁止传播。这种材料的可用性将为许多设备的应用开辟可能性，特别是在光学领域。其中包括与量子光学相关的设备，以及激光、led和微腔等光的限制和控制。本课题在本质上是基础性的，但在现代技术中广泛应用的光子器件方面具有潜在的实际影响。参与该项目的学生将获得在光学物理、激光光谱学以及凝聚态物理方面的强大背景，在工业和国家实验室中有很高的需求

9974353WatsonPhotonic band structure effects in periodic dielectric arrays will be investigated by spectroscopic, interferometric, and light scattering measurements in the visible and near infrared. Work on colloidal crystals fabricated from microsphere dielectric particles will be continued with an emphasis on more fully understanding their defect states. The primary new initiative in this project will be development of photopolymeric approaches for fabrication of photonic band gap structures suitable for study of linear and nonlinear optical effects and possible device applications. This approach will employ optical microscopy in combination with laser excitation and should provide advantages over fabrication of desired photonic structures by other means.%%%Photonic band gap crystals belong to a new class of materials in which propagation of electromagnetic waves is forbidden over a certain range of frequencies. Ready availability of such materials would open up the possibility of many device applications, especially in the optical regime. These include devices associated with quantum optics and the confinement and control of light such as lasers, LEDs, and microcavities. This project is fundamental in nature but has the potential to have practical impact on photonic devices, widespread in application in modern technology. Students participating in this project will gain strong backgrounds in optical physics and laser spectroscopy as well as condensed matter physics, in high demand in industrial and national laboratories.***