Two-dimensional local density of states in two-dimensional photonic crystals
Two-dimensional local density of states in two-dimensional photonic crystals
复制标题
DOI：
10.1364/oe.8.000191
复制
发表时间：
2001-01-29
期刊：
影响因子：
3.8
通讯作者：
Nicorovici, NAP
中科院分区：
文献类型：
--
作者：
Asatryan, AA;Fabre, S;Nicorovici, NAP
计算了由无限长圆柱团组成的二维光子晶体的二维局域态密度。LDOS决定嵌入在光子晶体中的辐射源的动力学。结果表明，对于无限阵列光子禁带内的频率，LDOS在晶体内部呈指数递减，并证明了即使是在禁带内的波长，以及对应于通带的波长，团簇内部也存在“热”和“冷”点。对于长波长，LDOS表现出局域态密度比真空度高30倍以上的振荡行为。(C)2001年美国光学学会。
We calculate the two-dimensional local density of states (LDOS) for two-dimensional photonic crystals composed of a finite cluster of circular cylinders of infinite length. The LDOS determines the dynamics of radiation sources embedded in a photonic crystal. We show that the LDOS decreases exponentially inside the crystal for frequencies within a photonic band gap of the associated infinite array and demonstrate that there exist "hot" and "cold" spots inside the cluster even for wavelengths inside a gap, and also for wavelengths corresponding to pass bands. For long wavelengths the LDOS exhibits oscillatory behavior in which the local density of states can be more than 30 times higher than the vacuum level. (C) 2001 Optical Society of America.