周期和准周期介电多层膜的光传播性质

In this project, we have studied the optical propagation through periodic and.quasiperiodic dielectric multilayer films both theoretically and experimentally. These investigations have presented a rich property of dielectric materials. Firstly, we have predicted for the first time in the theory that the mirror symmetry can introduce the perfect transmission of electromagnetic wave in quasiperiodic dielectric multilayers. And resonant transmissions of light have been experimentally observed in symmetric Fibonacci TiO2/SiO2 multilayers. Furthermore, the feature of perfect transmission peaks has been proved to be considered as general evidence for dielectric multilayers with symmetric internal structure. This findings open a unique way to control light propagation and have potential applications to optoelectric devices, such as the wavelength division multiplexing (WDM).system. In the second, we have studied the optical transmission of Thue-Morse(TM).multilayer of SiO2/TiO2. For the first time the frequency trifurcation feature has beenexperimentally demonstrated. This effect can be analogous to the electronic energy spectrum of a TM system, which has not yet been directly obtained in xperiments. The resonant transmission originates from the positional correlation of the basic units in TM system, and is.sensitive to the modulation of optical thickness. Besides, we have presented the coupled optical interface modes in a Thue-Morse dielectric superlattice, the delocalization in disordered chains with random symmetrical impurities, quantum transport through aperiodic waveguides, and persistent currents in aperiodic mesoscopic rings thread by a magnetric flux. The presented work in this project has shown some physical essence of dielectric materials and may contribute to the potential applications in optoelectric devices.

本项目基于包含K个无公度长度的一维K组元Fibonacci结构,系统深入地开展周期,准周期及橛谧贾芷谟胛扌蛑涞慕榈缍嗖隳さ墓獯バ灾实氖笛楹屠砺垩芯?一方面,在倒空间展示灾芷谙蜃贾芷谀酥廖扌蛳低车难莼?另一方面探索光子晶体的微结构和物理机制,寻找岣吖庾咏舸矶鹊男峦揪?为研制新型高性能的光电器件提供科学依据.