Far-field engineering of metal-metal terahertz quantum cascade lasers with integrated horn antennas

被引：0
|
作者：
Wang, F. [1 ]
Kundu, I. [3 ]
Li, L. [3 ]
Linfield, E. H. [3 ]
Davies, A. G. [3 ]
Moumdji, S. [2 ]
Colombelli, R. [2 ]
Mangeney, J. [1 ]
Tignon, J. [1 ]
Dhillon, S. S. [1 ]
机构：
[1] Univ Paris Diderot, Lab Pierre Aigrain, Ecole Normale Super,Sorbonne Paris Cite, PSL Res Univ,CNRS,Univ Pierre & Marie Curie,Sorbo, F-75231 Paris, France
[2] Univ Paris 11, Inst Elect Fondamentale, CNRS, UMR 8622, F-91405 Orsay, France
[3] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) | 2015年
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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：
The far-field of metal-metal terahertz quantum cascade lasers is greatly improved through integrated and stable planar horn antennas on top of the QCL ridge. The antenna structures introduce a gradual change in the high modal confinement of metal-metal waveguides and permit an improved far-field, showing a five times increase in the emitted output power. The two dimensional far-field patterns are measured at 77K and compared to electromagnetic simulations. The influence of parasitic high order transverse modes are restricted through the engineering of antenna structure (ridge and antenna width) to couple out the fundamental mode only.
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