Detection of terahertz radiation in gated two-dimensional structures governed by dc current

2006 ◽  
Vol 73 (12) ◽  
Author(s):  
D. Veksler ◽  
F. Teppe ◽  
A. P. Dmitriev ◽  
V. Yu. Kachorovskii ◽  
W. Knap ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Two Dimensional ◽  
Dc Current

Emission of terahertz radiation from selectively doped AlGaN/GaN heterostructures under the heating of two-dimensional electrons by an electric field

2012 ◽  
Vol 76 (2) ◽  
pp. 207-210 ◽  
Author(s):  
V. A. Shalygin ◽  
L. E. Vorobjev ◽  
D. A. Firsov ◽  
A. N. Sofronov ◽  
G. A. Melentyev ◽  
...  
Keyword(s):  
Electric Field ◽  
Terahertz Radiation ◽  
Two Dimensional

Emission and Detection of Terahertz Radiation Using Two-Dimensional Electrons in III–V Semiconductors and Graphene

2013 ◽  
Vol 3 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Taiichi Otsuji ◽  
Takayuki Watanabe ◽  
Stephane A. Boubanga Tombet ◽  
Akira Satou ◽  
Wojciech M. Knap ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Two Dimensional

RESONANT THz EMISSION IN A GRATING-COUPLED QUANTUM WELL DRIVEN BY DC CURRENT

2003 ◽  
Vol 17 (31n32) ◽  
pp. 6067-6071 ◽  
Author(s):  
S. K. HONG ◽  
I. V. SMETANIN ◽  
H. HAN
Keyword(s):  
Quantum Well ◽  
Emission Spectra ◽  
Two Dimensional ◽  
Purcell Effect ◽  
Resonant Enhancement ◽  
Self Consistent ◽  
Consistent Manner ◽  
Dc Current ◽  
Coupled Quantum Well

THz emission spectra from a grating-coupled two-dimensional plasmon system driven by DC current are calculated in a self-consistent manner. The emission peaks show strong resonant enhancement due to Smith–Purcell effect.

Negative conductivity of graphene with direct electric current

2021 ◽  
Author(s):  
I.M. Moiseenko ◽  
V.V. Popov ◽  
D.V. Fateev
Keyword(s):  
Reflection Coefficient ◽  
Electric Current ◽  
Terahertz Radiation ◽  
Room Temperature ◽  
Negative Real Part ◽  
Wave Incident ◽  
Thz Radiation ◽  
Direct Electric Current ◽  
Radiation Sources ◽  
Dc Current

Problem formulating. Currently, there are no compact, efficient terahertz radiation sources operating at room temperature. To create such sources and amplifiers, structures based on graphene with DC-current can be used. Goal. Finding conditions for achieving the negative real part of graphene conductivity and amplification of THz radiation in graphene with a direct electric current. Result. It is shown that for a certain value of direct electric current in graphene, the reflection coefficient of the THz wave incident on the structure based on graphene with DC-current exceeds unity, which indicates the amplification of THz radiation in the structure. The amplification of the THz radiation in graphene is achieved due to negative values of the real part of the graphene conductivity. Practical meaning. Results can be used to create sources and amplifiers of terahertz radiation.

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