Lifetime distribution of spontaneous emission from emitter(s) in three-dimensional woodpile photonic crystals.
Lifetime distribution of spontaneous emission from emitter(s) in three-dimensional woodpile photonic crystals.
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DOI：
10.1364/oe.19.011623
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发表时间：
2011-06
期刊：
影响因子：
3.8
通讯作者：
Jing-Feng Liu;HaoXiang Jiang;Zongyu Gan;B. Jia;C. Jin;Xuehua Wang;M. Gu
中科院分区：
文献类型：
--
作者：
Jing-Feng Liu;HaoXiang Jiang;Zongyu Gan;B. Jia;C. Jin;Xuehua Wang;M. Gu
研究了低折射率对比度的木堆光子晶体中基本晶胞内和激发发射体平面上的自发辐射寿命分布。结果表明，自发辐射寿命分布强烈依赖于发射体的位置和跃迁频率，且与晶胞具有相同的对称性。发射极在上间隙边缘附近的寿命比在伪隙中心的寿命长，这与传统的概念形成了鲜明的对比。此外，还发现发射体的极化方向对寿命分布有很大的影响，并可能导致高达4.2的各向异性因子(定义为寿命的最大值和最小值之间的差)。这些结果可能为今后的实验探索寿命分布或与取向有关的局域态密度提供依据。
Spontaneous emission lifetime distribution in the basic unit cell or on a plane of the excited emitters embedded in woodpile photonics crystals with low refractive index contrast are investigated. It is found that the spontaneous emission lifetime distribution strongly depends on the position and transition frequency of the emitters, and has the same symmetry as that of the unit cell. The lifetimes of emitters near the upper gap edge are longer than that in the center of the pseudo-gap, which is quite a contrast to the conventional concept. Furthermore, it is revealed that the polarization orientation of the emitters has significant influence on the lifetime distribution, and may result in a high anisotropy factor (defined as the difference between the maximum and minimum values of the lifetime) up to 4.2. These results may be supplied in probing the lifetime distribution or orientation-dependent local density of states in future experiments.