Tunable Surface Plasmon Polaritons with Monolithic Schottky Diodes
Tunable Surface Plasmon Polaritons with Monolithic Schottky Diodes
复制标题
具有单片肖特基二极管的可调谐表面等离子体激元
DOI：
10.1021/acsaelm.9b00499
复制
发表时间：
2019-10-01
影响因子：
4.7
通讯作者：
Song, Aimin
中科院分区：
文献类型：
--
作者：
Zhang, Yifei;Ling, Haotian;Song, Aimin
Surface plasmon polaritons (SPPs) provide subwavelength electric field confinement ranging from microwave to the visible. Several approaches have been explored to manipulate SPPs with a typical modulation capability of only a few percent. Here, active control of SPPs using monolithically fabricated Schottky diodes has been first designed and realized, achieving a continuous and significant modulation of transmission, reflection, and absorption. The SPPs propagating on a metal line are attenuated by using split ring resonators (SRRs) with an In–Ga–Zn–O Schottky diode bridging each SRR split gap. The resistance of the diodes can be tuned over a range of a few orders of magnitude with bias voltage, which continuously transforms each SRR to a metallic quasi-loop with subdued resonance. A remarkable modulation of 40% and 19% was demonstrated for the transmission and absorption, respectively, which to the best of our knowledge has not been achieved before.
