Abstract
We present the simulation, implementation, and measurement of a polarization insensitive broadband resonant terahertz metamaterial absorber. By stacking metal-insulator layers with differing structural dimensions, three closely positioned resonant peaks are merged into one broadband absorption spectrum. Greater than 60% absorption is obtained across a frequency range of where the central resonance frequency is . The FWHM of the device is 48%, which is two and half times greater than the FWHM of a single layer structure. Such metamaterials are promising candidates as absorbing elements for bolometric terahertz imaging.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
J. Grant, Y. Ma, S. Saha, L. B. Lok, A. Khalid, and D. R. S. Cumming
Opt. Lett. 36(8) 1524-1526 (2011)
Yong Ma, Qin Chen, James Grant, Shimul C. Saha, A. Khalid, and David R. S. Cumming
Opt. Lett. 36(6) 945-947 (2011)
Yuying Lu, Jining Li, Shaohua Zhang, Jinhai Sun, and Jian Quan Yao
Appl. Opt. 57(21) 6269-6275 (2018)