Abstract
A dual-controlled tunable polarization-independent perfect absorber based on bulk Dirac semimetal (BDS) and strontium titanate (STO) is proposed and analyzed. The results show that the absorptivity can reach 99% at 1.26 THz due to the critical coupling effect. Meanwhile, the absorptivity and resonant frequency of the proposed absorber can be dual-tuned dynamically by varying the temperature of the STO and the Fermi energy of the BDS. Furthermore, the coupled mode theory (CMT) and the equivalent circuit model (ECM) are used to theoretically analyze the performance of the absorber. Finally, modulation of the absorptivity spectra by tailoring the structure dimensions is also discussed. This work provides potential applications in the design of dual-tunable filters and absorbers.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
