Abstract
Multi-band small-angle irreversible radiation is significantly demanded in applications of high-resolution infrared sensing and infrared filtering. However, current nonreciprocal thermal radiation is either multichannel radiating with large incident angles or radiating at small angles within one single band. To address this issue, a multi-band nonreciprocal thermal emitter operated by exciting multiple resonances within the near-infrared band is proposed. The adopted microstructure arrays consist of periodic silicon square-ring arrays that are supported by magneto-optical medium and metal layer. With the physical mechanisms study through electromagnetic field energy distribution, the TE-polarized multi-band nonreciprocity of thermal radiation is over 70 % at small incident angle of 4°. Equally important, this strategy is effective and generalizable for dual-polarized small-angle multi-band nonreciprocal radiation with adopted microstructure arrays. It is believed that this scheme can promote the development of nonreciprocal thermal photonics.
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 callMore From: International Communications in Heat and Mass Transfer
Disclaimer: 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.
