High extraction efficiency of spontaneous emission from slabs of photonic crystals

被引:587
|
作者
Fan, SH [1 ]
Villeneuve, PR [1 ]
Joannopoulos, JD [1 ]
Schubert, EF [1 ]
机构
[1] BOSTON UNIV,DEPT ELECT & COMP ENGN,CTR PHOTON RES,BOSTON,MA 02215
关键词
D O I
10.1103/PhysRevLett.78.3294
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A thin slab of two-dimensional photonic crystal is shown to alter drastically the radiation pattern of spontaneous emission. More specifically, by eliminating all guided modes at the transition frequencies, spontaneous emission can be coupled entirely to free space modes, resulting in a greatly enhanced extraction efficiency. Such structures might provide a solution to the long-standing problem of poor light extraction from high refractive-index semiconductors in light-emitting diodes.
引用
收藏
页码:3294 / 3297
页数:4
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