Abstract-Fano Resonances in Terahertz Metasurfaces: A Figure of Merit Optimization

1. Longqing Cong,
2. Manukumara Manjappa, 
3. Ningning Xu, 
4. Ibraheem Al-Naib,
5. Weili Zhang and
6. Ranjan Singh

Article first published online: 12 AUG 2015

DOI: 10.1002/adom.201500207

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
http://onlinelibrary.wiley.com/doi/10.1002/adom.201500207/abstract

An operation range of the figure of merit (FoM) that reflects the trade-off between Q factor and resonance intensity of the Fano resonance is provided. The structural asymmetry parameter α = (l1 −l2)/(l1 + l2) × 100% in the resonator determines the FoM that has an optimized band of operation for asymmetry ranging from 4% to 8% in the terahertz Fano resonant metasurfaces.