KMS Chongqing Institute of Green and Intelligent Technology, CAS
| All-Semiconductor Plasmonic Resonator for Surface-Enhanced Infrared Absorption Spectroscopy | |
Wei, Wei; Nong, Jinpeng; Jiang, Xiao; Chen, Na; Luo, Suqin; Tang, Linlong
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| 2017 | |
| 摘要 | Infrared absorption spectroscopy remains a challenge due to the weak light-matter interaction between micron-wavelengthed infrared light and nano-sized molecules. A highly doped semiconductor supports intrinsic plasmon modes at infrared frequencies, and is compatible with the current epitaxial growth processing, which makes it promising for various applications. Here, we propose an all-semiconductor plasmonic resonator to enhance the infrared absorption of the adsorbed molecules. An optical model is employed to investigate the effect of structural parameters on the spectral features of the resonator and the enhanced infrared absorption characteristics are further discussed. When a molecular layer is deposited upon the resonator, the weak molecular absorption signal can be significantly enhanced. A high enhancement factor of 470 can be achieved once the resonance wavelength of the resonator is overlapped with the desired vibrational mode of the molecules. Our study offers a promising approach to engineering semiconductor optics devices for mid-infrared sensing applications. |
| DOI | 10.3390/mi8010006 |
| URL | 查看原文 |
| 发表期刊 | MICROMACHINES
 |
| ISSN | 2072-666X |
| 卷号 | 8期号:1 |
| 通讯作者 | Wei, W (reprint author), Chongqing Univ, Coll Optoelect Engn, Key Lab Optoelect Technol & Syst, Minist Educ China, Chongqing 400044, Peoples R China. ; Wei, W (reprint author), Chongqing Acad Sci & Technol, Chongqing Res Ctr Adv Mat, Chongqing 401123, Peoples R China. ; Wei, W (reprint author), Chinese Acad Sci, Chongqing Key Lab Multiscale Mfg Technol, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000395432500006 |
| 语种 | 英语 |
