Photonic Band Structures for Optoelectronic Applications

WPC 2 B V P Z快递10cpi？X，N x 6X@8；X@HP LaserJet系列II HPLase II PrS x@，T 0 opx@#|x 2 W C#|x 9301075 Haus我们计划开展有关光子带隙结构(PBSS)的基本物理和应用的理论研究。我们简要介绍了提出的研究方向：1.光子带隙材料的设计和改进：在过去的两年里，光子带隙材料的设计取得了很大的进展。到目前为止，用于光子带隙材料的研究仅限于无损双组分介电复合材料。这项研究的重点是找到具有正确几何形状的结构。在我们的研究中，我们将讨论以下主题：实际考虑因素，如损耗、有限尺寸效应、介电常数的频率依赖性、不完全周期等，对光子能带结构和本征模的影响。使用替代材料的可能性，例如超导体，具有强磁或压电性能的材料，以及非线性介电材料，仅举几例。这些材料的电磁响应可以不同程度地控制，从而使设计具有光学性质的PBSS成为可能，这些光学性质可以通过施加电场或磁场、或通过弹性变形或通过其他手段来控制。2.QED：计算PbS本征模的一个重要动机是可能用于腔QED计算。原子场的相互作用不仅通过光子态的密度，而且还通过与模相关联的电磁场的空间分布。原子场相互作用的另一个来源是通过一个附加项，它表示在h)0*0*0*介质中原子与激发极化电荷的相互作用。对这些机制的透彻理解对于设计具有PBSS的光电子器件是至关重要的。周期超导结构有望产生新的QED效应，这些效应在单个腔中的原子实验中没有观察到或微不足道。通过控制能带边缘的位置，我们期望原子的辐射性质可以被控制地改变。这将为研究腔QED提供一种新的手段，该系统可用作产生相干辐射脉冲的Q开关。***

WPC 2 B V P Z Courier 10cpi ? x x x , N x 6 X @ 8 ; X @ HP LaserJet Series II HPLASEII.PRS x @ , t 0 OpX @ #| x 2 W C #| x 9301075 Haus We propose to carry out theoretical investigators regarding the fundamental physics and applications of photonic bandgap structures (PBSs). We briefly describe the proposed research directions: 1. Design and refinement of photonic bandgap materials: Considerable progress has been made in the past two years in the design of PBSs. So far, only lossless two component dielectric composites have been investigated for use as photonic bandgap materials. The research has focused on finding the structure with the right geometry. We will address the following topics in our research: The effects of realistic considerations, such as losses finite size effects, frequency dependence of the dielectric constant, imperfect periodicity, etc., on the photonic band structure and the eigenmodes. Possibility of using alternate materials, such as superconductors, materials with strong magnetic or piezoelectric properties, and nonlinear dielectric materials, to name a few. The electromagnetic response of these materials can be controlled to varying degrees, making possible the design of PBSs with optical properties that can be controlled by means of an applied electric or magnetic field, or by elastic deformations or by other means. 2. QED: An important motivation for the calculation of the eigenmodes of a PBS is for possible use in cavity QED calculations. The atom field interaction is not only through the density of photon states, but also through the spatial distribution of electromagnetic fields associated with the mode. Another source of atom field interaction is through an additional term that represents the interaction of the atom with the induced polarization charges in the h) 0*0*0* medium. A thorough understanding of these mechanisms is essential in designing optoelectronic devices with PBSs. Periodic superconducting structures can be expected to yield novel QED effects that are not observed or are insignificant in experiments with atoms in a single cavity. By controlling the position of the band edge, we expect that the radiation properties of the atoms can be controlled altered. This will give provide a new means of investigating cavity QED; the system could be used as a Q swithch for generating pulses of coherent radiation. ***