The research and development of the new devices by the simultaneous control of the electrons and photons

采用自动克隆技术在具有三角形晶格构型的图案化衬底上制备了可见光-紫外区三维(3D)Ta2O5/SiO_2光子晶体，并研究了其面内(叠层XY面)光学性质。通过光的垂直入射到光子晶体解理面上的反射测量表明，在特定的光子能量处有最大反射。与计算的能带结构的比较表明，反射峰要么是由于光子禁带，要么是由于与平带相关的重光子。采用两步沉积的方法将发光样品插入到光子晶体中，利用光子晶体对发光特性进行强烈的修饰，系统地研究了晶格间距分布的圆形光子晶体的光学性质。在0~20 GHz的频率范围内，测试了由氧化铝圆柱体组成的CPC的透射谱。结果表明，光子带隙不仅存在于光子晶体中，而且也存在于相移光子晶体中。毫米波入射角的变化证明了各向同性光子带隙的存在。

Three-dimensional(3D) Ta_2O_5/SiO_2 photonic crystals in the visible-violet spectral region are fabricated by an auto-cloning technique on patterned substrates with triangular lattice configurations and their in-plane (the stack XY plane) optical properties are studied. Reflection measurements by normal incidence of light on to the cleaved facet of the photonic crystal reveal maximum reflections at certain photon energies. Comparison with calculated band structure demonstrates that the reflection peaks are either due to the photonic bandgap(PBG) within which the light propagation is forbidden, or due to heavy photons associated with flat bands. A two-step deposition method is adopted to insert luminescent sample into the photonic crystal and the emission property is strongly modified by the photonic crystal.We investigated the optical properties of a circular photonic crystal(CPC) for which the distance between lattices was systematically distributed. The transmission spectra of CPC composed of alumina cylinders were examined in the frequency region from 0 to 20 GHz. We show that photonic gaps are obtained not only in CPCs but also in phase-shifted CPCs. The isotropic photonic gaps are evidenced by changes in the incident angle of a millimeter wave.