光学
材料科学
导模共振
分布式布拉格反射镜
石墨烯
耦合模理论
反射器(摄影)
共振(粒子物理)
吸收(声学)
平版印刷术
干扰(通信)
光电子学
衍射光栅
栅栏
折射率
物理
纳米技术
电气工程
波长
频道(广播)
工程类
粒子物理学
光源
作者
Pankaj K. Sahoo,Jian Yi Pae,Vadakke Matham Murukeshan
出处
期刊:Optics Letters
[The Optical Society]
日期:2019-07-19
卷期号:44 (15): 3661-3661
被引量:16
摘要
A theoretical model based on the coupled mode theory is presented to calculate the absorption in a graphene embedded 1D guided-mode-resonance (GMR) structure that does not require a back reflector. The optimized graphene-GMR structure can absorb up to 70% of the incident light which far exceeds the already reported results without using any back-metal reflector or Bragg mirror. The theoretical analysis is valid for binary gratings and pyramidal gratings which are patterned using an interference lithography system. We experimentally validate our theoretical results and analyze the influence of the geometrical parameters to achieve critical coupling for the enhanced absorption.
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