Numerical investigation of highly efficient and tunable terahertz-wave generation using a low-group-velocity and low-dispersion two-dimensional GaAs photonic crystal waveguide

2020 ◽  
Vol 59 (9) ◽  
pp. 090903
Author(s):  
Teruyuki Nakahama ◽  
Nobuhiko Ozaki ◽  
Hisaya Oda ◽  
Naoki Ikeda ◽  
Yoshimasa Sugimoto
Keyword(s):  
Photonic Crystal ◽  
Numerical Investigation ◽  
Group Velocity ◽  
Terahertz Wave ◽  
Wave Generation ◽  
Two Dimensional ◽  
Photonic Crystal Waveguide ◽  
Highly Efficient ◽  
Low Dispersion

Terahertz-wave generation using graphene

2012 ◽  
Vol 1437 ◽  
Author(s):  
Taiichi Otsuji ◽  
Stephane Boubanga Tombet ◽  
Akira Satou ◽  
Maxim Ryzhii ◽  
Victor Ryzhii
Keyword(s):  
Terahertz Wave ◽  
Wave Generation ◽  
Nonequilibrium Carrier ◽  
Terahertz Range ◽  
Two Dimensional ◽  
Carrier Relaxation ◽  
Dynamic Conductivity ◽  
Electrically Pumped ◽  
Terahertz Lasers ◽  
Recombination Dynamics

ABSTRACTIn this paper recent advances in terahertz-wave generation in graphene are reviewed. First, fundamental basis of the optoelectronic properties of graphene is introduced. Second, nonequilibrium carrier relaxation and recombination dynamics in optically or electrically pumped graphene is described to introduce a possibility of negative dynamic conductivity in a wide terahertz range. Third, recent theoretical advances toward the creation of current-injection graphene terahertz lasers are described. Fourth, unique terahertz dynamics of the two-dimensional plasmons in graphene are described. Finally, the advantages of graphene materials and devices for terahertz-wave generation are summarized.

scholarly journals Full-mode analysis of a two-dimensional photonic crystal waveguide

2007 ◽  
Vol 56 (3) ◽  
pp. 1590
Author(s):  
Yin Hai-Rong ◽  
Gong Yu-Bin ◽  
Wei Yan-Yu ◽  
Lu Zhi-Gang ◽  
Gong Hua-Rong ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Mode Analysis ◽  
Two Dimensional ◽  
Photonic Crystal Waveguide ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal

Simultaneous low-loss and low-dispersion in a photonic-crystal waveguide for terahertz communications

2019 ◽  
Vol 12 (1) ◽  
pp. 012005 ◽  
Author(s):  
Xiongbin Yu ◽  
Masaki Sugeta ◽  
Yuichiro Yamagami ◽  
Masayuki Fujita ◽  
Tadao Nagatsuma
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Waveguide ◽  
Low Loss ◽  
Terahertz Communications ◽  
Low Dispersion
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