Journal
OPTICS EXPRESS
Volume 26, Issue 21, Pages 27683-27693Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.027683
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Funding
- National Natural Science Foundation of China [61534004, 61604112, 61622405]
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In this work, a periodic bowtie structure based on black phosphorus (BP) is theoretically proposed and characterized. It is demonstrated that localized surface plasmons can be excited in the BP nanoantennas at terahertz (THz) frequencies. Numerical investigations, using the numerical method finite-difference time-domain (FDTD), have been utilized to analyze the the dimensions' impact on absorption spectra. Furthermore, the electric field distribution is plotted and discussed to explain the resonance wavelength tuning by different geometrical sizes of the structure. Results reveal that the optimized BP bow-tie structure can be allowed for the realization of two-dimensional nanophotonics at terahertz frequencies. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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