Controlling theoretically total absorption in hybrid-cavity resonator with one graphene monolayer outside cavity |
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| Authors: | Li-an Bian Peiguo Liu Qihui Zhou Chenxi Liu Hanqing Liu Song Zha |
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| Institution: | 1.College of Electronic Science,National University of Defense Technology,Changsha,China;2.School of Physical and Electronic Science,Changsha University of Science and Technology,Changsha,China |
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| Abstract: | Total absorption is realized theoretically in a graphene-outside-cavity resonator. The structure is composed of the FP-Fano hybrid resonance cavity. Changing the thickness of grating exciting Fano resonance, the absorption-mode number can be tuned effectively. For the focused double-mode absorption, the resonances behave insensitively with the variation of chemical potential of graphene. Varying the geometry of grating can control the coupling extent of two modes. Also, by manipulating the period number of two-side multilayers around graphene, the absorption, shift and number of modes are governed. |
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