Radiation Model for Terahertz Transmission-Line Metamaterial Quantum-Cascade Lasers

被引：26

作者：

Hon, Philip W. C. ^{[1
]}

Tavallaee, Amir A. ^{[1
,2
]}

Chen, Qi-Sheng ^{[3
]}

Williams, Benjamin S. ^{[1
,2
]}

Itoh, Tatsuo ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, CNSI, Los Angeles, CA 90095 USA

[3] Northrop Grumman Aerosp Syst, Redondo Beach, CA 90278 USA

来源：

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY | 2012年 / 2卷 / 03期

基金：

美国国家科学基金会;

关键词：

Cavity model; composite right/left-handed transmission line; leaky-wave antenna; quantum-cascade (QC) lasers; terahertz active metamaterials;

D O I：

10.1109/TTHZ.2012.2191023

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present the use of the cavity antenna model in predicting the radiative loss, far-field polarization and far-field beam patterns of terahertz quantum-cascade (QC) lasers. Metal-metal waveguide QC-lasers, transmission-line metamaterial QC-lasers, and leaky-wave metamaterial antennas are considered. Comparison of the fundamental and first higher order lateral mode in a metal-metal waveguide QC-laser shows distinct differences in the radiation characteristics. Full-wave finite-element simulations, cavity model predictions and measurements of far-field beam patterns are compared for a one-dimensional leaky-wave antenna. Lastly, an active leaky-wave metamaterial antenna with full backward to forward wave beam steering is proposed and analyzed using the cavity antenna model.

引用

页码：323 / 332

页数：10

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