NONLINEAR RESPONSE INDUCED STRONG ABSORPTANCE OF GRAPHENE IN THE TERAHERTZ REGIME

2010 ◽  
Vol 24 (21) ◽  
pp. 2243-2249 ◽  
Author(s):  
X. G. XU ◽  
J. C. CAO
Keyword(s):  
Nonlinear Optical ◽  
Low Frequency ◽  
Single Layer ◽  
Optical Response ◽  
Optoelectronic Device ◽  
Nonlinear Optical Response ◽  
Single Layer Graphene ◽  
Dirac Fermions ◽  
Layer Graphene ◽  
Fifth Order

We have calculated the fifth-order nonlinear optical response at experimentally relevant field strengths within the model of massless Dirac fermions by coupling the massless Dirac fermions to the time-dependent electric field quantum mechanically. It demonstrates that the fifth-order nonlinear optical response plays an important role in the contribution to the optical conductivity of pristine single-layer graphene in the low frequency part of the terahertz regime. The nonlinear effect can enhance the optical activity of single-layer graphene in the terahertz regime and significantly decreases the transmittance of graphene in the regime of frequencies from 0.1 to 0.5 THz. These properties of graphene may be used for photonic and optoelectronic device in the terahertz regime.

Nonlinear optical response in Kronig–Penney type graphene superlattice in terahertz regime

2015 ◽  
Vol 29 (13) ◽  
pp. 1550060 ◽  
Author(s):  
Lijuan Jiang ◽  
Rui-Yang Yuan ◽  
Xin Zhao ◽  
Jing Lv ◽  
Hui Yan
Keyword(s):  
Low Temperature ◽  
External Field ◽  
Nonlinear Optical ◽  
Low Frequency ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Nonlinear Responses ◽  
Graphene Superlattice ◽  
Fifth Order ◽  
Optoelectronics Devices

The terahertz nonlinear optical response in Kronig–Penney (KP) type graphene superlattice is demonstrated. The single-, triple- and quintuple-frequencies of the fifth-order nonlinear responses are investigated for different frequencies and temperatures with the angle φ along the periodicity of the superlattice toward the external field tuning from 0 to π/2. The results show that the fifth-order nonlinear optical conductance of graphene superlattice is enhanced in the terahertz regime when φ = 0, i.e. an external field is applied along the periodicity of the superlattice. The fifth-order nonlinear optical conductances at φ = 0 for different frequencies and temperatures are calculated. The results show that the nonlinear optical conductance is enhanced in low frequency and low temperature. Our results suggest that KP type graphene superlattices are preferred structures for developing graphene-based nonlinear photonics and optoelectronics devices.

scholarly journals Gate-tunable third-order nonlinear optical response of massless Dirac fermions in graphene

2018 ◽  
Vol 12 (7) ◽  
pp. 430-436 ◽  
Author(s):  
Tao Jiang ◽  
Di Huang ◽  
Jinluo Cheng ◽  
Xiaodong Fan ◽  
Zhihong Zhang ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Dirac Fermions ◽  
Third Order

Third- and Fifth-Order Nonlinear Optical Response of a TICT/Stilbene Hybrid Chromophore

2020 ◽  
Vol 124 (9) ◽  
pp. 5363-5370 ◽  
Author(s):  
Alexander J.-T. Lou ◽  
Sepehr Benis ◽  
Munan Gao ◽  
Alexander Baev ◽  
David Kim ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Fifth Order

Curvature analysis of single layer graphene on the basis of extreme low-frequency Raman spectroscopy

2019 ◽  
Vol 114 (16) ◽  
pp. 161907
Author(s):  
Y. Shen ◽  
E. Dai ◽  
X. Liu ◽  
W. Pan ◽  
H. Yang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Low Frequency ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Curvature Analysis

scholarly journals Low-Frequency Noise Parameter Extraction Method for Single-Layer Graphene FETs

2020 ◽  
Vol 67 (5) ◽  
pp. 2093-2099
Author(s):  
Nikolaos Mavredakis ◽  
Wei Wei ◽  
Emiliano Pallecchi ◽  
Dominique Vignaud ◽  
Henri Happy ◽  
...  
Keyword(s):  
Extraction Method ◽  
Low Frequency ◽  
Single Layer ◽  
Parameter Extraction ◽  
Single Layer Graphene ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Noise Parameter ◽  
Layer Graphene

Optical response of large scale single layer graphene

2011 ◽  
Vol 98 (7) ◽  
pp. 071905 ◽  
Author(s):  
Chul Lee ◽  
Joo Youn Kim ◽  
Sukang Bae ◽  
Keun Soo Kim ◽  
Byung Hee Hong ◽  
...  
Keyword(s):  
Large Scale ◽  
Single Layer ◽  
Optical Response ◽  
Single Layer Graphene ◽  
Layer Graphene
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