论文标题
从纳米条纹MIM隧道连接中的间隙等离子体增强的光发射
Enhanced light emission from gap plasmons in nano-strip MIM tunnel junctions
论文作者
论文摘要
使用非弹性电子隧穿的光激发是一种有前途的方法，用于实现具有高调制带宽的超紧凑型片上光源。但是，这些纳米级光源的实际实施是由于电子到光子转导的效率较低而提出了挑战。在这里，我们研究了由于非弹性电子隧道而导致的周期性AG-SIO2-AG隧道连接处增强光生和耦合的设计。与其他报告的结构相比，该结构具有简单制造程序的独特优势。通过有效地耦合GAP等离子模式和晶格共振，我们在光学状态的局部密度上达到了共振增强，与未配合的结构相比，相比之下，高达三个数量级和增强的辐射效率约为0.53，高30％。
Electrical excitation of light using inelastic electron tunneling is a promising approach for the realization of ultra-compact on-chip optical sources with high modulation bandwidth. However, the practical implementation of these nanoscale light sources presents a challenge due to the low electron-to-photon transduction efficiencies. Here, we investigate designs for the enhancement of light generation and out-coupling in a periodic Ag-SiO2-Ag tunnel junction due to inelastic electron tunneling. The structure presents a unique advantage of a simple fabrication procedure as compared to the other reported structures. By efficiently coupling the gap plasmon mode and the lattice resonance, we achieve a resonant enhancement in the local density of optical states up to three orders of magnitude and enhanced radiative efficiency of ~0.53, 30% higher as compared to the uncoupled structure.
