Surface plasmon photonic structures in terahertz quantum cascade lasers

被引：58
作者：
Demichel, Olivier
Mahler, Lukas
Losco, Tonia
Mauro, Cosimo
Green, Richard
Xu, Jihua
Tredicucci, Alessandro
Beltram, Fabio
Beere, Harvey E.
Ritchie, David A.
Tamosiunas, Vincas
机构：
[1] INFM, CNR, NEST, I-56126 Pisa, Italy
[2] Scuola Normale Super Pisa, Pisa, Italy
[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[4] Inst Semicond Phys, LT-01108 Vilnius, Lithuania
来源：
OPTICS EXPRESS | 2006年 / 14卷 / 12期
关键词：
D O I：
10.1364/OE.14.005335
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The periodic scattering of the surface plasmon modes employed in the waveguide of terahertz quantum cascade lasers is shown to be an efficient method to control the properties of the laser emission. The scatterers are realized as thin slits in the metal and top contact layer carrying the surface plasmon. This technique provides larger coupling strengths than previously reported and can be used in various device implementations. Here the method is applied to realize a distributed feedback resonator without back-facet reflection, to achieve vertical emission of the radiation with second-order gratings, and to increase the facet reflectivity by fabricating passive distributed Bragg reflectors. (c) 2006 Optical Society of America.
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收藏
页码：5335 / 5345
页数：11
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