An antenna model for the Purcell effect.
An antenna model for the Purcell effect.
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DOI：
10.1038/srep12956
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发表时间：
2015-08-10
影响因子：
4.6
通讯作者：
Belov PA
中科院分区：
文献类型：
--
作者：
Krasnok AE;Slobozhanyuk AP;Simovski CR;Tretyakov SA;Poddubny AN;Miroshnichenko AE;Kivshar YS;Belov PA
珀塞尔效应被定义为在谐振腔存在下量子发射体的自发发射率的修改。然而，由环境引起的发射体的发射速率的变化具有经典对应物。任何调谐到谐振的小天线都可以被描述为具有辐射损耗的振荡器，并且环境对其辐射的影响可以根据天线辐射电阻来建模和测量，类似于量子发射器。我们利用这种类似的行为，开发一个通用的方法来计算不同的系统和各种频率范围内的珀塞尔因子，包括电和磁珀塞尔因子。我们的方法是由一个一般的等效方案，它允许resenting的珀塞尔因子通过连续辐射的小天线在电磁环境的存在。
The Purcell effect is defined as a modification of the spontaneous emission rate of a quantum emitter at the presence of a resonant cavity. However, a change of the emission rate of an emitter caused by an environment has a classical counterpart. Any small antenna tuned to a resonance can be described as an oscillator with radiative losses, and the effect of the environment on its radiation can be modeled and measured in terms of the antenna radiation resistance, similar to a quantum emitter. We exploit this analogue behavior to develop a general approach for calculating the Purcell factors of different systems and various frequency ranges including both electric and magnetic Purcell factors. Our approach is illustrated by a general equivalent scheme, and it allows resenting the Purcell factor through the continuous radiation of a small antenna at the presence of an electromagnetic environment.