Abstract

Theory of plasmon-exciton coupling is developed for a metal nanocylinder grating located in the vicinity of a semiconductor quantum well. In dipole approximation, the effective polarizability of cylinders is derived, taking into account generation of quantum-well excitons in the near field of surface plasmons. Given the polarizability, the spectra of reflection and absorption are calculated for metal-semiconductor systems to study the effect of plasmon-exciton interaction. The excitonic response is shown to be enhanced by high-quality plasmons of Ag cylinders, although strong coupling is not attained for realistic nanostructure parameters.

中文翻译：

---

一维金属纳米圆柱光栅中量子阱激子与等离激元的耦合

摘要

等离子体激子耦合理论是针对位于半导体量子阱附近的金属纳米圆柱光栅开发的。在偶极近似中，考虑了在表面等离激元的近场中产生的量子阱激子，得出了圆柱的有效极化率。给定极化率，计算了金属-半导体系统的反射和吸收光谱，以研究等离子体激子相互作用的影响。尽管对于实际的纳米结构参数并没有达到强耦合，但高品质的Ag圆柱等离激元显示出激子响应得到了增强。