Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, 10 rue Vauquelin, 75231 Paris CEDEX 05, France.
Opt Lett. 2010 Feb 1;35(3):291-3. doi: 10.1364/OL.35.000291.
We study the spontaneous decay rate of a dipole emitter close to a metallic nanoparticle in the extreme near-field regime. The metal is modeled using a nonlocal dielectric function that accounts for the microscopic length scales of the free electron gas. We describe quantitatively the crossover between the macroscopic and microscopic regimes and the enhanced nonradiative decay due to microscopic interactions. Our theory is in agreement with results previously established in the asymptotic near- and far-field regimes.
我们研究了在极端近场条件下，靠近金属纳米粒子的偶极子发射器的自发衰减率。金属采用非局部介电函数进行建模，该函数考虑了自由电子气的微观长度尺度。我们定量描述了宏观和微观区域之间的转变以及微观相互作用引起的增强的非辐射衰减。我们的理论与以前在近场和远场渐近区域中建立的结果一致。
