Local density of states in photonic crystal cavity

doi:10.1007/s12200-012-0271-0

Front Optoelec

2012, Vol. 5

Issue (3) : 341-344 https://doi.org/10.1007/s12200-012-0271-0

RESEARCH ARTICLE

Local density of states in photonic crystal cavity

Peng QIU(

), Guanglong WANG, Jianglei LU, Hongpei WANG

Institute of Nanotechnology and Microsystem, College of Ordnance Engineering, Shijiazhuang 050003, China

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Abstract

Local radiative density of optical states (LDOS) offers a tool to control the radiative rate of spontaneous emission from molecules, atoms, and quantum dots, which is proportional to LDOS. This paper presents that LDOS how to make the population of excited-state decay exponentially in time, and how these dynamics can be affected. By adopting the plane-wave expansion method, properties of an inverse-opal photonic crystal are studied with the help of photonic dispersion relations. Results in this paper show that the LDOS is radically modified in photonic crystal, and the rate of spontaneous emission can be described by the functions of position in the crystal and orientation of transition dipole moment.

Keywords spontaneous emission local radiative density of optical states (LDOS) photonic crystal plane-wave method

Corresponding Author(s): QIU Peng,Email:qpfind@163.com

Issue Date: 05 September 2012

Cite this article:

Guanglong WANG,Jianglei LU,Hongpei WANG, et al. Local density of states in photonic crystal cavity[J]. Front Optoelec, 2012, 5(3): 341-344.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-012-0271-0
https://academic.hep.com.cn/foe/EN/Y2012/V5/I3/341

Fig.1 Scheme of interaction of two-level atom with vacuum-field mode

Fig.2 View of single unit cell of modeled inverse opal

Fig.3 LDOS calculated with plane-wave method in inverse-opal photonic crystal. LDOS at (a) (0, 0, 0) and (1/4, 1/4, 1/4) are shown by connected circles and triangles, respectively; (b) (1/4, 1/4, 0) projected on (1, 1, 0) and (0, 0, 1) directions are shown by connected squares and triangles, respectively

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