Terahertz focusing of multiple wavelengths by graphene metasurfaces
Metasurfaces can achieve nearly arbitrary wavefront control based on manipulation of the wave phase profile. We propose a metasurface based on double graphene cut-wire resonators which can cover the complete 2p phase region with high reflection efficiency. This full phase coverage is essential for efficient wavefront manipulation, without reflecting energy into unwanted channels. A mirror capable of focusing multiple wavelengths is demonstrated numerically based on the proposed structure. The...[Show more]
|Collections||ANU Research Publications|
|Source:||Applied Physics Letters|
|Access Rights:||Open Access|
|01_Liu_Terahertz_focusing_of_multiple_2016.pdf||1.77 MB||Adobe PDF|
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