Active control of terahertz multimode resonance transmission through subwavelength metal annular aperture arrays

被引：3
|
作者：
Hu, D. [1 ]
Liu, C. P. [2 ]
Zhang, Y. [1 ,3 ,4 ]
机构：
[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
[2] Yuan Ze Univ, Dept Photon Engn, Tao Yuan 320, Taiwan
[3] Capital Normal Univ, Beijing Key Lab Terahertz Spect & Imaging, Key Lab Terahertz Optoelect, Minist Educ, Beijing 100048, Peoples R China
[4] Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China
来源：
JOURNAL OF MODERN OPTICS | 2013年 / 60卷 / 18期
基金：
国家高技术研究发展计划(863计划); 北京市自然科学基金; 中国国家自然科学基金;
关键词：
terahertz multimode resonance; ultrafast optical properties; plasmonic resonance; annular aperture array; RADIATION; LIGHT;
D O I：
10.1080/09500340.2013.840394
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ultrafast optical properties of U-shaped annular aperture arrays (UAAAs) fabricated on a silicon substrate were investigated for varying photodoping levels of the silicon from the back to front interfaces of the sample. Experimental data demonstrate that the transmission modulation depth of the multimode resonance can be realized about 90% under optical power 60 mW, and the off switch of these resonance peaks transmission can be also simultaneously achieved within several picoseconds. Such plasmonic structure is able to be used for ultrafast optical modulators, active terahertz plasmonics, and ultrafast optical off switch.
引用
收藏
页码：1548 / 1553
页数：6
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