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

本文研究了无序光学超晶格中光子带结构及其对光局域化的影响。光子带结构将在胶体晶体的电磁波谱可见部分进行测量。在具有高折射率反差的晶体中，光子的局域化将通过引入适当的无序来实现。皮秒飞行时间、相干后向散射和散斑光谱将被用于检测这些材料中的光子传输。本研究结果将促进对随机介质中经典波的局域化和输运性质以及无序导体中电子局域化的认识。

This is an experimental investigation of photonic band structure and its effects on localization of light in disordered optical superlattices. Photonic band structure will be measured in the visible part of the electromagnetic spectrum in colloidal crystals. In crystals with high refractive index contrast, photon localization will be pursued by introduction of appropriate disorder. Picosecond time-of-flight, coherent backscattering, and speckle spectroscopy will be among the probes used to examine photon transport in these materials. The results of this research will advance the understanding of localization and transport properties of classical waves in random media as well as electron localization in disordered conductors.