Scheme for achieving coherent perfect absorption by anisotropic metamaterials

Type
Article

Authors
Zhang, Xiujuan
Wu, Ying

KAUST Department
Applied Mathematics and Computational Science Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Online Publication Date
2017-02-22

Print Publication Date
2017-03-06

Date
2017-02-22

Abstract
We propose a unified scheme to achieve coherent perfect absorption of electromagnetic waves by anisotropic metamaterials. The scheme describes the condition on perfect absorption and offers an inverse design route based on effective medium theory in conjunction with retrieval method to determine practical metamaterial absorbers. The scheme is scalable to frequencies and applicable to various incident angles. Numerical simulations show that perfect absorption is achieved in the designed absorbers over a wide range of incident angles, verifying the scheme. By integrating these absorbers, we further propose an absorber to absorb energy from two coherent point sources.

Citation
Zhang X, Wu Y (2017) Scheme for achieving coherent perfect absorption by anisotropic metamaterials. Optics Express 25: 4860. Available: http://dx.doi.org/10.1364/oe.25.004860.

Acknowledgements
King Abdullah University of Science and Technology Baseline Research Fund.

Publisher
The Optical Society

Journal
Optics Express

DOI
10.1364/oe.25.004860

Additional Links
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-5-4860

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