摘要
三维面心立方结构的固有的高对称性使其只具备非完全光子带隙 ,而非晶结构可降低对称性导致准完全光子带隙的出现 .实验结果表明非晶胶状晶体具有准完全光子带隙 .非晶胶状光子晶体中的光子带隙的禁带宽度与波长均不随光入射到样品池的角度的变化而明显变化 .其禁带宽度比SiO2
The experimental results demonstrate that an amorphous colloidal crystal possesses a quasi - complete photonic band gap, The bandwidth and the wavelength of the forbidden gap in the amorphous crystal do not change along with the variation of the incident angle. The bandwidth of the stop band is much larger than that in the silica colloidal single crystal, The results also show that quasi - complete photonic band gap can be observed in an amorphous colloidal crystal with a low refractive index. The quasi - complete photonic band gap results from the fact that the symmetry of lattice is decreased in amorphous colloidal crystal.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第5期892-896,共5页
Acta Physica Sinica
基金
国家自然科学基金 (批准号 :1993 4 0 0 2和 198740 83 )
教育部重点基金 (批准号 :990 96)
广东省自然科学基金 (批准号 :980 2 83
