Experiment Fabrication and Theory Analysis of Three-dimension High Quality Photonic Crystals
高质量三维光子晶体的实验制备及理论分析

The pressure controlled self-assembly method provided recently was improved and a sealed suction setup filled with silica gel spheres was used to retain a stable temperature,humidity and pressure condition for fabricating high-quality three dimension photonic crystals(PCs).PCs were fabricated by polystyrene (PS) colloid spheres with diameter 260 nm at 35℃ and 45 mmHg.The structures,qualities and properties of PCs fabricated were analyzed theoretically and experimentally.The results show that this system can be uesd repeatedly to fabricate high PCs with perfect,ordered and close-packed arrays; deep and narrow photonic band gap(PBG) along Г-L direction and steep photonic band edge(PBE) slope are found.The depth and normalized width of PBG are about 83% and 0.073,respectively.The slope of PBE arrives at 8%/nm which provide a basis for studying advanced optical equipments such as ultra-fast all-optical switches.