Active Mid-Infrared Plasmonic Beam Steering Devices

被引：0
|
作者：
Adams, D. C. [1 ]
Ribaudo, T. [1 ]
Thongrattanasiri, S. [2 ]
Shaner, E. A. [3 ]
Podolskiy, V. A. [1 ]
Wasserman, D. [1 ]
机构：
[1] Univ Massachusetts Lowell, Dept Phys, Lowell, MA 01854 USA
[2] Oregon State Univ, Dept Phys, Corvallis, OR 97331 USA
[3] Sandia Natl Labs, Dept Phys, Albuquerque, NM 87185 USA
来源：
ACTIVE PHOTONIC MATERIALS III | 2010年 / 7756卷
基金：
美国国家科学基金会;
关键词：
mid-infrared; plasmonics; beam steering; SURFACE; LIGHT; EXCITATION; LASERS;
D O I：
10.1117/12.859285
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 demonstrate the steering of coherent mid-infrared radiation through plasmonic structures consisting of a single sub-wavelength slit flanked by a periodic array of grooves, fabricated on GaAs substrates. We demonstrate control of steering angle by tuning the incident radiation, and study beam quality for the transmitted light. In addition, we demonstrate that small shifts in the refractive index of the GaAs substrate can actively control the steering angle of the transmitted light, opening a path towards the development of no-moving-parts plasmonic beam steering devices.
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页数：7
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