论文标题
在混合磁质 - 质量质量系统中，阐明波导 - 平板强耦合，避免过境和自然弱值扩增的作用
Unravelling the role of waveguide-plasmon strong coupling, avoided crossing and natural weak value amplification on the enhanced Faraday effect in hybrid magneto-plasmonic systems
论文作者
论文摘要
杂交磁质系统中磁光效应的增强，由于它们用于构建非重点纳米光子设备的潜力，因此引起了极大的关注。对增强的基本起源和促进机制的定量理解对于优化应用至关重要。在这里，我们揭示了混合磁质量系统中法拉第旋转和椭圆形的巨大增强的明显不同的物理来源，即用横向电气（TE）和横向磁性（TM）极化光激发波导的磁质晶体。在TE极化激发的情况下，在表面等离子体并未直接激发的情况下，由于Fano共振的光谱域干扰而出现的Faraday效应的自然弱值扩增是增强的主要原因。另一方面，对于TM极化激发，波导 - 播种的强耦合及其避免过境的普遍表现起着有趣的作用，从而最大程度地增强了避免穿越方案中磁光的效应。
Enhancement of magneto-optical effects in hybrid magneto-plasmonic systems has attracted considerable recent attention owing to their potential for building non-reciprocal nanophotonic devices. Quantitative understanding on the fundamental origin and contributing mechanisms for the enhancement is extremely crucial for optimizing applications. Here, we unravel the distinctly different physical origin of the giant enhancement of Faraday rotation and ellipticity in a hybrid magneto-plasmonic system, namely, waveguided magneto-plasmonic crystal for excitation with transverse electric (TE) and transverse magnetic (TM) polarized light. With TE polarization excitation, where the surface plasmons are not directly excited, the natural weak value amplification of Faraday effects appearing due to the spectral domain interference of Fano resonance is the dominant cause of the enhancement. For TM polarization excitation, on the other hand, waveguide-plasmon strong coupling and its universal manifestation of avoided crossing plays an intriguing role, leading to maximum enhancement of the magneto-optical effects in the avoided crossing regime.
