Local density of states in photonic crystal cavity  

作　　者：Peng QIU Guanglong WANG Jianglei LU Hongpei WANG 

机构地区：[1]Institute of Nanotechnology and Microsystem, College of Ordnance Engineering, Shijiazhuang 050003, China

出　　处：《Frontiers of Optoelectronics》2012年第3期341-344,共4页光电子前沿（英文版）

摘　　要：Local radiative density of optical states （LDOS） offers a tool to control the radiative rate of spontaneous emission from molecules, atoms, and quan- tum 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.Local radiative density of optical states （LDOS） offers a tool to control the radiative rate of spontaneous emission from molecules, atoms, and quan- tum 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.

关 键 词：spontaneous emission local radiative densityof optical states （LDOS） photonic crystal plane-wavemethod 

分 类 号：O734[理学—晶体学] TN16[电子电信—物理电子学]