In this paper we present a novel nonlinear metamaterials absorber consisting of a gold cross structure resonator, and a ndoped InAs ground plane separated by a GaAs spacer. When the incident field strength rises from 60๐๐ โ ๐๐โ1 to 300๐๐ โ ๐๐โ1, the absorption at resonance frequency is reduced by 70% due to the nonlinear response of n-doped InAs ground plane. To the best of our knowledge, the modulation depth of our design is higher than previous works on nonlinear absorber. The mechanism behind the modulation is demonstrated by transmission line model analysis and numerical simulations. The proposed structure eliminates the side effect brought by the substrate and can be developed to dual-band nonlinear metamaterials absorber. Such flexible design may find its applications in ultrafast terahertz optics and passive protection of sensitive electromagnetic devices.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens usersโplease
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.