宽带红外双 Vivaldi 纳米天线的高负载灵敏度。

High load sensitivity in wideband infrared dual-Vivaldi nanoantennas.

机构信息

Department of Physical Electronics, School of Electrical Engineering, Tel Aviv University, Tel Aviv 69978, Israel.

出版信息

Opt Lett. 2013 Jan 15;38(2):205-7. doi: 10.1364/OL.38.000205.

DOI:10.1364/OL.38.000205

Abstract

Dual-Vivaldi nanoantenna (DVA) arrays were designed, fabricated, and optically characterized in the infrared (IR) and visible regimes. The antenna arrays were characterized by measuring the scattered light at IR (1450-1640 nm) and visible (780 nm) spectral ranges. The radiation efficiency and the spectral response of the antennas were found to be in good agreement with numerical simulations. The results presented here demonstrate the extremely wideband nature of the DVAs and the strong impact of load at the antenna terminals on its scattering response. These properties, as well as their many degrees of freedom for design, render the DVAs excellent candidates for optical sensing applications.

摘要

双维瓦尔第纳米天线（DVA）阵列在红外（IR）和可见（Vis）区域进行了设计、制作和光学特性研究。通过测量 IR（1450-1640nm）和 Vis（780nm）光谱范围内的散射光，对天线阵列进行了特性描述。发现天线的辐射效率和光谱响应与数值模拟结果吻合良好。本文的结果表明，DVA 具有极宽带的性质，以及天线末端负载对其散射响应的强烈影响。这些特性以及它们在设计方面的多种自由度，使得 DVA 成为光学传感应用的优秀候选者。