Experimental And Theoretical Research On Silicon-based Two-dimensional Photonic Crystal

Photonic crystals (PCs), which have information carrier with photons, can be used to fabricatea lot of high performance devices by photonic band gap (PBG) or defect modes in PBG. Becauseof transparency at telecom wavelength and mature silicon-based ultra-fine process techniques,silicon PC, which easily apply to optoelectronics integration and optical interconnects, will be keymaterials in future information age. In this paper, It is reported that silicon-based two-dimensionalPC is studied in experiment and calculation, respectively.In experiment, two-dimensional silicon PC with different parameters could be fabricated by1064nm and355nm Q-switched lasers. The mechanism of interaction between photon and siliconwas discussed.In theory, the band structures of silicon PC with different lattices and cavity shapes wereinvestigated by plane-wave expansion (PWE) method, the physical models on photon confinementeffect and lattice symmetry effect were discovered, and the optimal cavity structures for differentlattices were designed. When the appropriate points or point-shift defects are built into the siliconPC with square and triangular lattices, the manipulation of photon defect modes in PBG will beoperated in the micro-cavities. In addition, the frequency response of the micro-cavities and theelectromagnetic field distribution of the defect modes were investigated by finite-differencetime-domain (FDTD) method.Finally, integrating emission of the localized electronic states related to different surface bondsis studied on silicon quantum dots（QDs）or films with the defect modes in two-dimensionalsilicon PC micro-cavities. The structure design on the silicon PC nano-laser with optical orelectrical pumping was obtained.