Low-threshold optical bistability in a metasurface with graphene

2017 ◽  
Vol 50 (43) ◽  
pp. 434003 ◽  
Author(s):  
Jun Guo ◽  
Banxian Ruan ◽  
Jiaqi Zhu ◽  
Xiaoyu Dai ◽  
Yuanjiang Xiang ◽  
...  
Keyword(s):  
Optical Bistability ◽  
Low Threshold

Experimental observation of low threshold optical bistability in exfoliated graphene with low oxidation degree

2016 ◽  
Vol 53 ◽  
pp. 80-86 ◽  
Author(s):  
Morteza A. Sharif ◽  
M.H. Majles Ara ◽  
Bijan Ghafary ◽  
Somayeh Salmani ◽  
Salman Mohajer
Keyword(s):  
Experimental Observation ◽  
Optical Bistability ◽  
Oxidation Degree ◽  
Exfoliated Graphene ◽  
Low Threshold

scholarly journals Low-threshold optical bistability of graphene-wrapped dielectric composite

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Yang Huang ◽  
Andrey E. Miroshnichenko ◽  
Lei Gao
Keyword(s):  
Optical Bistability ◽  
Dielectric Composite ◽  
Low Threshold

scholarly journals Low threshold optical bistability in one-dimensional gratings based on graphene plasmonics

2017 ◽  
Vol 25 (6) ◽  
pp. 5972 ◽  
Author(s):  
Jun Guo ◽  
Leyong Jiang ◽  
Yue Jia ◽  
Xiaoyu Dai ◽  
Yuanjiang Xiang ◽  
...  
Keyword(s):  
Optical Bistability ◽  
One Dimensional ◽  
Graphene Plasmonics ◽  
Low Threshold

scholarly journals Low-threshold optical bistability with multilayer graphene-covering Otto configuration

2016 ◽  
Vol 49 (25) ◽  
pp. 255306 ◽  
Author(s):  
Hengliang Wang ◽  
Jipeng Wu ◽  
Jun Guo ◽  
Leyong Jiang ◽  
Yuanjiang Xiang ◽  
...  
Keyword(s):  
Optical Bistability ◽  
Multilayer Graphene ◽  
Low Threshold

scholarly journals Low Threshold Optical Bistability in Aperiodic PT-Symmetric Lattices Composited with Fibonacci Sequence Dielectrics and Graphene

2019 ◽  
Vol 9 (23) ◽  
pp. 5125 ◽  
Author(s):  
Zhao ◽  
Xu ◽  
Guo ◽  
Xu ◽  
Zhong ◽  
...  
Keyword(s):  
Optical Bistability ◽  
Chemical Potential ◽  
Fibonacci Sequence ◽  
Optical Switches ◽  
Photonic Lattices ◽  
Nonlinearity Effect ◽  
Low Threshold ◽  
Terahertz Frequencies ◽  
Field Localization ◽  
Gain Loss

We explore the optical bistability in aperiodic parity–time-symmetric (PT-symmetric) photonic lattices that are composed of Fibonacci sequence dielectrics and graphene at terahertz frequencies. Two Fibonacci sequence dielectrics, viz. aperiodic photonic lattices, are utilized for enhancing band-edge resonances and achieving the electric field localization that can enhance the nonlinearity of graphene. Modulating the gain-loss factor of dielectrics in the PT symmetry lattices further strengthens the nonlinearity effect and, consequently, low threshold bistability is realized. The interval between the upper and lower bistability thresholds enlarges as the momentum relaxation time of graphene changes. Moreover, we show that the bistability threshold can also be flexibly tuned by modulating the graphene chemical potential. The study might be applied in photomemories and optical switches.

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