Tunable plasmonic wires at terahertz frequencies

Ta-Jen Yen; Dongmin Wu; Nicholas Fang; Xiang Zhang

doi:10.1117/12.560553

19 October 2004 Tunable plasmonic wires at terahertz frequencies

Ta-Jen Yen, Dongmin Wu, Nicholas Fang, Xiang Zhang

Author Affiliations +

Proceedings Volume 5512, Plasmonics: Metallic Nanostructures and Their Optical Properties II; (2004) https://doi.org/10.1117/12.560553
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

We employed micro-electro-mechanical system (MEMS) techniques to fabricate parallel sub-wavelength thin-wire structures of metals on elastomeric matrices. From the transmission measurement by Fourier Transform Infrared Spectroscopy, we observed the depressed plasma frequencies of these thin-wire structures at terahertz (THz) ranges. Furthermore, the behavior of depressed plasma frequencies is very sensitive to the polarization of the applied field. The reasons that these engineered materials exhibit unprecedented properties not observed in nature can be interpreted by two factors: the diluted electron densities and the enhancement of electron mass. In addition, the plasma frequencies are readily tunable over a broad frequency range by extending the elastomeric matrices to change their periodicity. These novel properties of tunable and polarization-dependant plasma frequencies at THz ranges promise abundant striking applications in THz optics.

Citation Download Citation

Ta-Jen Yen, Dongmin Wu, Nicholas Fang, and Xiang Zhang "Tunable plasmonic wires at terahertz frequencies", Proc. SPIE 5512, Plasmonics: Metallic Nanostructures and Their Optical Properties II, (19 October 2004); https://doi.org/10.1117/12.560553

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