Research PapersNo Access

A broadband planar THz metamaterial absorber

Institute of Laser and Opto-electronics, Key Laboratory of Opto-electronics Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Department of Physics, Tianjin University Renai College, Tianjin 301636, China

Corresponding author.

Search for more papers by this author

Run-Mei Gao

Institute of Laser and Opto-electronics, Key Laboratory of Opto-electronics Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Search for more papers by this author

Chun-Feng Ding

Institute of Laser and Opto-electronics, Key Laboratory of Opto-electronics Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Search for more papers by this author

Ya-Ting Zhang

Institute of Laser and Opto-electronics, Key Laboratory of Opto-electronics Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Search for more papers by this author

Liang Wu

Institute of Laser and Opto-electronics, Key Laboratory of Opto-electronics Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Search for more papers by this author

De-Gang Xu

Institute of Laser and Opto-electronics, Key Laboratory of Opto-electronics Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Search for more papers by this author

, and

Jian-Quan Yao

Institute of Laser and Opto-electronics, Key Laboratory of Opto-electronics Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Search for more papers by this author

https://doi.org/10.1142/S0217984915500566Cited by:10 (Source: Crossref)

Abstract

We propose the design of a broadband planar metamaterial absorber (MA) at terahertz frequencies. The unit cell of the MA is composed of four dual-band sub-cells with different dimensions in a coplanar. The four dual-band sub-cell structures resonate at several neighboring frequencies. The absorber consists of two metallic layers separated by a dielectric spacer. Simulation results show that the metamaterial absorption at normal incidence is above 90% in the frequency of 6.56–8.10 THz. This design provides an effective way to construct broadband absorber. The multiple-reflection theory was used to explain the absorption mechanism of our investigated structures. The coupling of adjacent four dual-band sub-cells can introduce additional capacitance to affect the performance of absorber.

Keywords:

References

V. G. Veselago , Sov. Phys. Usp. 10 , 509 ( 1968 ) . Web of Science, ADS, Google Scholar
Y. Q. Ye , Y. Jin and S. L. He , J. Opt. Soc. Am. B 27 , 498 ( 2010 ) . Web of Science, ADS, Google Scholar
Z. C. Xu et al. , Chin. Phys. Lett. 5 , 054205 ( 2014 ) . Web of Science, Google Scholar
X. Shen et al. , Opt. Lett. 19 , 9401 ( 2011 ) . Google Scholar
Q. Y. Wen et al. , Appl. Phys. Lett. 95 , 241111 ( 2009 ) . Web of Science, ADS, Google Scholar
X. P. Shen et al. , Appl. Phys. Lett. 101 , 154102 ( 2012 ) . Web of Science, ADS, Google Scholar
H. Xiong et al. , J. Appl. Phys. 114 , 064109 ( 2013 ) . Web of Science, Google Scholar
Y. G. Cheng , Y. Nie and R. Z. Gong , Appl. Phys. B 111 , 483 ( 2013 ) . Web of Science, ADS, Google Scholar
B. X. Wang , L. L. Wang and G. Z. Wang , IEEE Photonics Technol. Lett. 26 , 2 ( 2014 ) . Google Scholar
Y. Z. Cheng , Y. Nie and R. H. Gong , Opt. Laser Technol. 48 , 415 ( 2013 ) . Web of Science, ADS, Google Scholar
D. E. Wen , H. L. Yang and J. F. Zhang , Phys. Scripta 88 , 015402 ( 2013 ) . Web of Science, ADS, Google Scholar
D. M. Wu et al. , Appl. Phys. Lett. 83 , 201 ( 2003 ) . Web of Science, ADS, Google Scholar
Y. Q. Ye , Y. Jin and S. L. He , J. Opt. Soc. Am. B 27 , 498 ( 2010 ) . Web of Science, ADS, Google Scholar
W. Zhu and X. Zhao , J. Opt. Soc. Am. B 26 , 12 ( 2009 ) . Web of Science, Google Scholar
F. Ding , Y. Cui and S. He , Appl. Phys. Lett. 100 , 103506 ( 2012 ) . Web of Science, ADS, Google Scholar
X. P. Shen et al. , Opt. Express 19 , 9401 ( 2011 ) . Web of Science, ADS, Google Scholar
D. R. Smith , Phys. Rev. E 71 , 036617 ( 2005 ) . Web of Science, ADS, Google Scholar
H. T. Chen , Opt. Express 20 , 7165 ( 2012 ) . Web of Science, ADS, Google Scholar
H. T. Chen et al. , Phys. Rev. Lett. 105 , 073901 ( 2010 ) . Web of Science, ADS, Google Scholar
Y. Q. Xu et al. , J. Appl. Phys. 110 , 041102 ( 2011 ) . Google Scholar
L. Huang et al. , Appl. Phys. Lett. 101 , 101102 ( 2012 ) . Web of Science, ADS, Google Scholar