The role of dispersive magnetic permeability in ultrashort electromagnetic pulse propagation in nonlinear metamaterials

2007 ◽  
Author(s):  
Shuangchun Wen ◽  
Qiang Lv ◽  
Xi Cheng ◽  
Leyong Jiang ◽  
Wenhua Su
Keyword(s):  
Magnetic Permeability ◽  
Electromagnetic Pulse ◽  
Pulse Propagation ◽  
Ultrashort Electromagnetic Pulse ◽  
Nonlinear Metamaterials

Theoretical models for ultrashort electromagnetic pulse propagation in nonlinear metamaterials

2007 ◽  
Vol 75 (3) ◽  
Author(s):  
Shuangchun Wen ◽  
Yuanjiang Xiang ◽  
Xiaoyu Dai ◽  
Zhixiang Tang ◽  
Wenhua Su ◽  
...  
Keyword(s):  
Electromagnetic Pulse ◽  
Pulse Propagation ◽  
Theoretical Models ◽  
Ultrashort Electromagnetic Pulse ◽  
Nonlinear Metamaterials

Role of anomalous self-steepening in controlling self-accelerating Airy pulses in nonlinear metamaterials

2016 ◽  
Vol 25 (01) ◽  
pp. 1650010 ◽  
Author(s):  
Jinggui Zhang ◽  
Yuanjiang Xiang ◽  
Yongfan Li ◽  
Dajun Lei ◽  
Lifu Zhang
Keyword(s):  
Pulse Propagation ◽  
Dynamical Behavior ◽  
The Self ◽  
Cubic Nonlinearity ◽  
Great Flexibility ◽  
Ultrashort Pulse Propagation ◽  
Nonlinear Metamaterials ◽  
Opposite Situation ◽  
Positive Index

The additional dispersive magnetic permeability in metamaterials (MMs) described by the Drude model is able to generate the anomalous self-steepening (SS) effect which can be positive, negative even zero. This provides more great flexibility for us to control ultrashort pulse propagation, when compared with the corresponding case in naturally positive-index materials (PIMs). In this paper, we theoretically investigate the self-accelerating control of Airy pulse through such anomalous SS effect in MMs with a cubic nonlinearity. The emphasis is given to the counterintuitive dynamical behavior different from those in PIMs. It is shown that positive SS in MMs acts to promote the self-acceleration of such pulse and the corresponding spectral features exhibits a broad redshifted behaviors, as it does in PIMs; while the negative SS gives rise to the appearance of the opposite situation. That is to say, the self-acceleration of Airy pulse will be delayed through broadening the spectrum toward blue side. Meanwhile, the effect of the specific truncation coefficient imposed on Airy pulses in MMs also be discussed under the roles of positive and negative SS, respectively. Our findings show that the SS effect in MMs can provide a more powerful tool in controlling the self-accelerating of Airy pulse when compared with the corresponding case in PIMs.

Modeling of ultrashort pulse propagation in lossy nonlinear metamaterials

2016 ◽  
Vol 41 (3) ◽  
pp. 952-958 ◽  
Author(s):  
Nikolaos L. Tsitsas ◽  
Polykarpos Porfyrakis ◽  
Dimitri J. Frantzeskakis
Keyword(s):  
Ultrashort Pulse ◽  
Pulse Propagation ◽  
Ultrashort Pulse Propagation ◽  
Nonlinear Metamaterials
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