Journal
IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume 53, Issue 2, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2016.2643279
Keywords
Terahertz; metamaterial; broadband absorption; split ring
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Funding
- New Direction Cultivation project of Chongqing University of Posts and Telecommunications [A2014-116]
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We present a broadband terahertz metamaterial absorber, of which the unit cell is made up of two cirular split rings, a dielectric substrate and a metallic ground. The simulation results show that the absorber achieves a broadband absorption from 0.85 to 1.926 THz with the absorptivity beyond 90% at normal incidence, and the bandwidth is 1.076 THz, which is 77.52% with respect to the central frequency. The broadband and the high absorption are mainly resulted from the strong electromagnetic resonance and overlapping of resonant frequencies. Moreover, the proposed absorber has a property of wide angle absorptivity for both TE and TM polarizations, and thus can play an important role in terahertz imaging, detecting, and stealthy technology.
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