Pulse Propagation in Periodic Dielectric Materials

提案编号：ECS-9630068 主要研究者：Joseph豪斯 标题：脉冲在周期性介质材料中的传播 分析： 本研究将从理论和实验上研究电磁波在包含具有强非线性吸收和非线性折射的新材料的光子带隙（PBG）结构中的传播。 在光子带隙结构中，周期性阵列引入与固态晶体中的电子带隙类似的光学禁带。随着将具有强非线性折射的材料引入到PBG系统中，预期将引入额外的PBG效应，这也是可以控制的。将具有强非线性反饱和吸收的材料引入通道中应导致这样的结构，其中光学响应在强度上受到材料以及光子晶体的衍射和散射特性的限制。 这种结构在强光是问题的任何情况下都有许多应用。本研究中的PBG结构将是宽带的，以提供波长捷变保护，并且能够在宽视场下工作。 与海军研究实验室（NRL）的研究人员建立了强有力的直接实验合作。 该研究的NRL部分将由陆军研究办公室（ARO）通过NSF，通过Renssalear Polytechnic Institute提供资金。 ARO增强奖工作说明书的副本定义了NRL的研究贡献，以及ARO评论，附后。在RPI的理论研究直接耦合到NRL的实验实现。

Proposal Number: ECS-9630068 Principal Investigator: Joseph Haus Title: Pulse Propagation in Periodic Dielectric Materials Analysis: In this research, electromagnetic wave propagation in photonic band gap (PBG) structures, containing new materials with both strong nonlinear absorption and nonlinear refraction, will be theoretically and experimentally investigated. In a photonic band gap structure, a periodic array introduces optically forbidden bands in analogy with electronic band gaps in solid state crystals. With the introduction of materials with a strong nonlinear refraction into a PBG system, it is expected that additional PBG effects will be introduced, which can also be controlled. Introduction of materials with a strong nonlinear reverse saturable absorption, into channels should result in a structure in which the optical response is limited in intensity by the material and by the diffraction and scattering properties of the photonic crystal. There are many applications for such structures in any situation in which intense light is a problem. The PBG structures in this investigation will be broad band to provide wavelength agile protection and will be capable of operating with a wide field of view. A strong direct experimental collaboration with researchers at the Naval Research Laboratory (NRL) has been established. The NRL component of the research will be funded by the Army Research Office (ARO), through NSF, via subcontract with Renssalear Polytechnic Institute. A copy of the ARO Augmentation Award Statement of Work defining the NRL research contribution, and the ARO reviews, are attached. The theoretical investigation at RPI is directly coupled to the experimental realization at NRL.