Research of the applications of ITO in microwave-range surface plasmon waves

Senfeng Lai; Wen Wu; Wenhua Gu

doi:10.1117/12.2237248

17 September 2016 Research of the applications of ITO in microwave-range surface plasmon waves

Senfeng Lai, Wen Wu, Wenhua Gu

Proceedings Volume 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV; 99212H (2016) https://doi.org/10.1117/12.2237248
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Because of the electromagnetic field enhancement effect in subwavelength scale, the surface plasmon wave (SPW) has been widely used in beam forming, bio-prospecting, and subwavelength structure design. But most research work is in the visible light or terahertz frequency band, and the surface plasmonic material (SPM) is usually limited to metals. In the microwave band, complex structures have to be used to achieve the desired subwavelength effects, making use of both metal and dielectric materials. In this paper, we propose the excitation of SPW in the microwave range using a simple structure and the material of indium tin oxide (ITO). By measuring the electric field profile during the propagation process, the excitation of SPW in ITO was verified. At the same time, frequency dependence was seen during the propagation process. Therefore, ITO can be a good SPM in the microwave band, just like metals in the visible light band. Considering the transparent characteristics of ITO, it can have many interesting applications.

Citation Download Citation

Senfeng Lai, Wen Wu, and Wenhua Gu "Research of the applications of ITO in microwave-range surface plasmon waves", Proc. SPIE 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV, 99212H (17 September 2016); https://doi.org/10.1117/12.2237248

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