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Terahertz Waves: Perfect Extinction of Terahertz Waves in Monolayer Graphene over 2‐nm‐Wide Metallic Apertures (Advanced Optical Materials 5/2015)
Author(s) -
Park HyeongRyeol,
Namgung Seon,
Chen Xiaoshu,
Lindquist Nathan C.,
Giannini Vincenzo,
Francescato Yan,
Maier Stefan A.,
Oh SangHyun
Publication year - 2015
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201570031
Subject(s) - graphene , materials science , terahertz radiation , monolayer , optoelectronics , optics , transmission (telecommunications) , metal , extraordinary optical transmission , extinction ratio , extinction (optical mineralogy) , nanotechnology , plasmon , surface plasmon , surface plasmon polariton , telecommunications , physics , wavelength , metallurgy , computer science
For enhanced light–matter interactions with 2D materials, ultra‐small metallic nanogaps can be utilized. As shown in the image from S.‐H. Oh and co‐workers, light incident from below is strongly confined within these annular gaps and efficiently funneled through for extraordinarily large transmission. On page 667, by placing monolayer graphene at the exit of these gaps (the right side is covered with graphene), this enhanced transmission is blocked since the graphene absorbs 99% of the strongly confined waves.