Stop-band structure in complementary three-dimensional opal-based photonic crystals

被引:28
|
作者
Romanov, SG [1 ]
Fokin, AV
De La Rue, RM
机构
[1] Univ Glasgow, Dept Elect & Elect Engn, Optoelect Res Grp, Glasgow G12 8QQ, Lanark, Scotland
[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
关键词
D O I
10.1088/0953-8984/11/17/317
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The stop-band width and angular dispersion have been traced by angle-resolved reflectance spectroscopy for two opposite configurations of opal-based photonic crystals where either the silica balls possess a higher refractive index than the voids or vice versa. It has been demonstrated that filling the empty voids of opal with a material of higher refractive index than silica results in widening of the stop-band and squeezing of its dispersion, thus improving the stop-band of the opal grating towards the omnidirectional photonic band-gap situation.
引用
收藏
页码:3593 / 3600
页数:8
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