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Propagation of Light in Colloidal Crystals: Photonic Band Structure and Localization

光在胶体晶体中的传播：光子能带结构和局域化

基本信息

批准号：
9510460
负责人：
George Watson
金额：
$ 18.84万
依托单位：
University of Delaware
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1995
资助国家：
美国
起止时间：
1995-11-01 至 1999-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9510460&HistoricalAwards=false
关键词：
Propagation Light Colloidal Crystals Photonic

项目摘要

9510460 Watson Colloidal crystals, fabricated from microsphere dielectric particles, can be tailored to satisfy the Bragg condition for visible and near infrared light. The interaction of light with the optical lattice results in photonic band structure that is analogous to electronic band structure in atomic crystals. Spectroscopic and interferometric determination of photonic band structure will be extended from the visible to the near infrared. In addition to continued investigation of photonic band structure in theses crystals and its implications for photon localization, new initiatives include the study of (1) impurity modes in photonic stop bands and (2) interaction of band structure effects and nonlinear optical properties. %%% The technological developments of the past 50 years, initiated with the invention of the transistor, were possible only by the extensive and continued research of the physical properties of semiconductor materials. Future photonic analogs of today's electronic devices, where light action replaces that of the electron, may sustain these technological advancements at the current rate. The behavior of light in photonics crystals wil l be experimentally studied by numerous optical methods in an attempt to understand the issues of photon transport and localization in future devices, and its relationship to electron transport and localization in current devices.***

9510460沃森由微球介电颗粒制成的胶体晶体可以被定制以满足可见光和近红外光的布拉格条件。光与光学晶格的相互作用导致光子带结构，其类似于原子晶体中的电子带结构。光谱法和干涉法测定光子能带结构将从可见光扩展到近红外。除了继续研究这些晶体中的光子带结构及其对光子局域化的影响外，新的举措包括研究（1）光子阻带中的杂质模式和（2）带结构效应与非线性光学性质的相互作用。以晶体管的发明为开端的过去50年的技术发展，只有通过对半导体材料的物理性质进行广泛和持续的研究才有可能。未来的光子类似于今天的电子设备，其中光的作用取代了电子的作用，可能会以目前的速度维持这些技术进步。光子晶体中光的行为将通过多种光学方法进行实验研究，以试图了解未来器件中光子传输和局域化的问题，以及它与当前器件中电子传输和局域化的关系。