Zero-Index Terahertz Quantum-Cascade Metamaterial Lasers

被引：34

作者：

Tavallaee, Amir Ali ^{[1
,2
]}

Hon, PhilipW. C. ^{[1
]}

Mehta, Karan ^{[1
,2
]}

Itoh, Tatsuo ^{[1
]}

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

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

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 2010年 / 46卷 / 07期

基金：

美国国家科学基金会;

关键词：

Composite right/left-handed transmission line; quantum-cascade lasers; terahertz active metamaterials; WAVE-GUIDE; MODE;

D O I：

10.1109/JQE.2010.2043642

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 propose a new one-dimensional composite right/left-handed (CRLH) transmission line active metamaterial based upon a sub-wavelength metal waveguide loaded with quantum-cascade material that provides terahertz gain via stimulated emission. Finite element simulations were performed to design and characterize a one-dimensional CRLH metamaterial supporting "backward" waves in the range of 1-2 THz. The addition of capacitive gaps in the top metal and inductive virtual current paths from top contact to the ground plane of a metal-metal quantum-cascade waveguide introduces propagating negative index and zero-index modes. We evaluate the feasibility of a zero-index terahertz quantum-cascade laser, based on a CRLH resonator, which exhibits a uniform spatial mode that is immune to spatial hole burning. An alternate balanced design for traveling-wave applications is also discussed.

引用

页码：1091 / 1098

页数：8

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