Local density of states in photonic crystal cavity

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 ho...

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Bibliographic Details
Published in:Frontiers of Optoelectronics (Online) 2012-09, Vol.5 (3), p.341-344
Main Authors: Qiu, Peng, Wang, Guanglong, Lu, Jianglei, Wang, Hongpei
Format: Article
Language:English
Subjects:
Biomedical Engineering and Bioengineering
Electrical Engineering
Engineering
Physics
Research Article
低压降稳压器
光子晶体
共振腔
局域态密度
平面波展开法
色散关系
衰减指数
跃迁偶极矩
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Summary: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.
ISSN:1674-4128
2095-2759
1674-4594
2095-2767
DOI:10.1007/s12200-012-0271-0