Abstract

We present a modal analysis of metal–insulator–metal (MIM)-based metamaterials in the far infrared region. These structures can be used as resonant reflection bandcut spectral filters that are independent of the polarization and direction of incidence. We show that this resonant reflection dip is due to the excitation of quasimodes (modes associated with a complex frequency) leading to quasi-total absorption. We have fabricated large area samples made of chromium nanorod gratings on top of Si/Cr layers deposited on silicon substrate. Measurements by Fourier transform spectrophotometry show good agreement with finite element simulations. A quasimodal expansion method is applied to obtain a minimal resonant model that fits well full wave simulations and that highlights excitation conditions of the modes.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
A metamaterial absorber for the terahertz regime: Design, fabrication and characterization

Hu Tao, Nathan I. Landy, Christopher M. Bingham, Xin Zhang, Richard D. Averitt, and Willie J. Padilla
Opt. Express 16(10) 7181-7188 (2008)

Tailoring optical responses of infrared plasmonic metamaterial absorbers by optical phonons

Junyu Li, Rulei Gan, Qiushi Guo, Huan Liu, Jianfeng Xu, and Fei Yi
Opt. Express 26(13) 16769-16781 (2018)

Design of narrowband Bragg spectral filters in subwavelength grating metamaterial waveguides

Jiří Čtyroký, Juan Gonzalo Wangüemert-Pérez, Pavel Kwiecien, Ivan Richter, Ján Litvik, Jens H. Schmid, Íñigo Molina-Fernández, Alejandro Ortega-Moñux, Milan Dado, and Pavel Cheben
Opt. Express 26(1) 179-194 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (17)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription