Hollow Metallic waveguides for beam shaping THz QCL

被引：0
|
作者：
Degl'Innocenti, R. [1 ]
Shah, Y. D. [1 ]
Jessop, D. S. [1 ]
Ren, Y. [1 ]
Wallis, R. [1 ]
Mitrofanov, O. [2 ]
Beere, H. E. [1 ]
Ritchie, D. A. [1 ]
机构：
[1] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England
[2] UCL, Dept Elect & Elect Engn, London, England
来源：
2014 39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2014年
基金：
英国工程与自然科学研究理事会;
关键词：
QUANTUM-CASCADE LASERS; POWER;
D O I：
暂无
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 have realized a compact beam-shaping and collimating element for a double metal terahertz (THz) quantum cascade laser (QCL) emitting around 2.9 THz using directly integrated hollow metallic waveguides. Our approach allowed us to efficiently improve the beam profile with respect to the standard emission pattern observed out of a double metal QCL. The Gaussian-like mode profile emerging from the metallic waveguides also exhibited a remarkable degree of collimation. The other laser characteristics such as the total output power and maximal operational temperature were marginally affected.
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