Spontaneous-emission control by local density of states of photonic crystal cavity

	Spontaneous-emission control by local density of states of photonic crystal cavity
	Jiang B
刊名	chinese physics b
	2011
卷号	20 期号:2 页码:article no.24208
关键词	spontaneous emission local density of states photonic crystal cavity DEFECT
ISSN号	1674-1056
通讯作者	zheng, wh, chinese acad sci, inst semicond, nanooptoelect lab, beijing 100083, peoples r china. whzheng@semi.ac.cn
学科主题	光电子学
收录类别	SCI
资助信息	national basic research program of china [2006cb921705]; national natural science foundation of china [10634080, 60677046, 60838003]; national high technology research and development program of china [2007aa03z410, 2007aa03z408]
语种	英语
公开日期	2011-07-06 ; 2011-07-15
附注	the local density of states (ldos) of two-dimensional square lattice photonic crystal (phc) defect cavity is studied. the results show that the ldos in the centre is greatly reduced, while the ldos at the point or the centre (for example, at the point (0.3a, 0.4a), where a is the lattice constant) is extremely enhanced. further, the disordered radii are introduced to imitate the real devices fabricated in our experiment, and then we study the ldos of phc cavity with configurations of different disordered radii. the results show that in the disordered cavity, the ldos in the centre is still greatly reduced, while the ldos at the point (0.3a, 0.4a) is still extremely enhanced. it shows that the ldos analysis is useful. when a laser is designed on the basis of the square lattice phc rod cavity, in order to enhance the spontaneous emission, the active materials should not be inserted in the centre of the cavity, but located at positions off the centre. so ldos method gives a guide to design the positions of the active materials (quantum dots) in the lasers.
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/21345]
专题	半导体研究所_纳米光电子实验室
推荐引用方式 GB/T 7714	Jiang B. Spontaneous-emission control by local density of states of photonic crystal cavity[J]. chinese physics b,2011,20(2):article no.24208.
APA	Jiang B.(2011).Spontaneous-emission control by local density of states of photonic crystal cavity.chinese physics b,20(2),article no.24208.
MLA	Jiang B."Spontaneous-emission control by local density of states of photonic crystal cavity".chinese physics b 20.2(2011):article no.24208.