期刊
PHYSICAL REVIEW B
卷 85, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.115438
关键词
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资金
- FCT [SFRH/BPD/65600/2009, Past-C/FIS/UI0607/2011, PTDC/FIS/101434/2008]
- Fundos FEDER, through the Programa Operacional Factores de Competitividade - COMPETE
- MICINN [FIS2010-21883-C02-02]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/65600/2009, PTDC/FIS/101434/2008] Funding Source: FCT
We present an efficient graphene-based photodetector with two Fabri-Perot cavities. It is shown that the absorption can reach almost 100% around a given frequency, which is determined by the two-cavity lengths. It is also shown that hysteresis in the absorbance is possible, with the transmittance amplitude of the mirrors working as an external driving field. The role of nonlinear contributions to the optical susceptibility of graphene is discussed.
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