Theory of fluorescence in photonic crystals
Theory of fluorescence in photonic crystals
复制标题
DOI：
10.1103/physreva.65.043808
复制
发表时间：
2002-03
影响因子：
2.9
通讯作者：
N. Vats;S. John;K. Busch
中科院分区：
文献类型：
--
作者：
N. Vats;S. John;K. Busch
我们提出了一种形式主义的描述荧光从光学活性材料嵌入光子晶体结构具有光子带隙或赝隙。的电磁场展开的晶体的布洛赫模式是用来开发的荧光方程的光子模式的局部密度的发射原子在高或低介电区域的晶体。然后我们获得了光子晶体中发光材料的荧光光谱和发射动力学的表达式。我们的形式主义的有效性证明通过计算模型光子态密度的相关量。我们的计算的现实系统的描述的连接进行了讨论。我们还描述了这些分析的准确描述的辐射系统和光子晶体内的电磁水库之间的相互作用的后果。
We present a formalism for the description of fluorescence from optically active materials embedded in a photonic crystal structure possessing a photonic band gap or pseudogap. An electromagnetic field expansion in terms of Bloch modes of the crystal is used to develop the equations for fluorescence in terms of the local density of photon modes available to the emitting atoms in either the high or low dielectric regions of the crystal. We then obtain expressions for fluorescence spectra and emission dynamics for luminescent materials in photonic crystals. The validity of our formalism is demonstrated through the calculation of relevant quantities for model photon densities of states. The connection of our calculations to the description of realistic systems is discussed. We also describe the consequences of these analyses on the accurate description of the interaction between radiative systems and the electromagnetic reservoir within photonic crystals.