Propagation of ultrashort optical pulses in anisotropic optical media with carbon nanotubes

2021 ◽  
pp. 2150197
Author(s):  
N. N. Konobeeva ◽  
M. B. Belonenko
Keyword(s):  
Carbon Nanotubes ◽  
Electromagnetic Field ◽  
Vector Potential ◽  
Pulse Shape ◽  
Electromagnetic Waves ◽  
Optical Pulses ◽  
Effective Equation ◽  
Ultrashort Optical Pulses ◽  
Optical Media ◽  
Crystal Type

In this paper, we investigate the evolution of electromagnetic waves in a nonlinear anisotropic optical medium with carbon nanotubes (CNTs). Based on Maxwell’s equation, an effective equation is obtained for the vector potential of the electromagnetic field, which takes into account different values of the velocity and polarization with two directions. The dependence of the pulse shape on the crystal type, as well as the angle between the electric field and the CNTs axis is revealed.

scholarly journals Two-dimensional ultra-short optical pulses in carbon nanotubes with acoustic field

2019 ◽  
Vol 220 ◽  
pp. 03029
Author(s):  
Dmitry Skvortsov ◽  
Natalia Konobeeva ◽  
Irina Zaporotskova ◽  
Mikhail Belonenko
Keyword(s):  
Carbon Nanotubes ◽  
Electromagnetic Field ◽  
Gauge Theory ◽  
Stress Field ◽  
Acoustic Field ◽  
Vector Potential ◽  
Two Dimensional ◽  
Optical Pulses ◽  
Effective Equation ◽  
External Strain

We investigate the dynamics of ultra-short optical pulses in carbon nanotubes under the influence of an acoustic field in two-dimensional geometry. We obtain an effective equation for the vector potential of the electromagnetic field, taking into account the stress field described in the framework of the gauge theory. And, we study the effects, which observed with a change of the magnitude of the external strain.

Discrete solitons in Bragg environment with carbon nanotubes

2015 ◽  
Vol 29 (11) ◽  
pp. 1550041 ◽  
Author(s):  
Mikhail B. Belonenko ◽  
Julia V. Nevzorova ◽  
Elena N. Galkina
Keyword(s):  
Carbon Nanotubes ◽  
Refractive Index ◽  
Detailed Analysis ◽  
Gordon Equation ◽  
Sine Gordon Equation ◽  
Optical Pulses ◽  
Effective Equation ◽  
Ultrashort Optical Pulses ◽  
Discrete Solitons

In this paper, we study the propagation of ultrashort optical pulses, which can be regarded as discrete solitons in this case, when the medium with carbon nanotubes (CNTs), has spatially modulated refractive index. As a result we were able to obtain the effective equation, which represents an analog of the classical sine-Gordon equation. A detailed analysis of the dependence on various parameters of the problem has been performed.

Peculiarities of extremely short optical pulses propagation in carbon nanotube medium with nonlinear absorption

2020 ◽  
Vol 34 (31) ◽  
pp. 2050358
Author(s):  
Natalia N. Konobeeva ◽  
Eduard G. Fedorov ◽  
Mikhail B. Belonenko
Keyword(s):  
Carbon Nanotubes ◽  
Nonlinear Absorption ◽  
Piezoelectric Effect ◽  
Pulse Field ◽  
Heavy Nuclei ◽  
Optical Pulses ◽  
Effective Equation ◽  
Electromagnetic Pulses ◽  
The Stability ◽  
Extremely Short Optical Pulses

In this paper, we study the propagation of extremely short electromagnetic pulses in a medium with zig–zag carbon nanotubes taking into account pumping and nonlinear absorption introduced phenomenologically. Based on Maxwell’s equations, we obtain an effective equation for the vector potential of the electromagnetic field, which takes into account the dissipation of the pulse field under the conditions of the piezoelectric effect associated with the vibrations of heavy nuclei of the medium, pumping by an external electromagnetic wave, and nonlinear absorption of carbon nanotubes. We demonstrate the stability of the electromagnetic pulse shape on a time scale that is significantly longer than the pulse duration but not exceeding the relaxation time.

Ultrashort optical pulses in carbon nanotubes and graphene with periodic impurities

2010 ◽  
Vol 52 (8) ◽  
pp. 1780-1786 ◽  
Author(s):  
M. B. Belonenko ◽  
N. G. Lebedev ◽  
N. N. Yanyushkina
Keyword(s):  
Carbon Nanotubes ◽  
Optical Pulses ◽  
Ultrashort Optical Pulses

scholarly journals Optical pulses in carbon nanotubes with strong electron-electron interaction due to impurities

2021 ◽  
Vol 2057 (1) ◽  
pp. 012103
Author(s):  
N N Konobeeva ◽  
M B Belonenko
Keyword(s):  
Carbon Nanotubes ◽  
Pulse Shape ◽  
Wave Equations ◽  
Pulse Propagation ◽  
Displacement Vector ◽  
Electron Interaction ◽  
Optical Pulses ◽  
Strong Electron ◽  
System Parameters ◽  
Carbon System

Abstract In this paper, we investigate electromagnetic pulse propagation in a medium with impurity carbon nanotubes, which are associated with the acoustic subsystem. The electron spectrum for the carbon system is obtained from the model that takes into account Coulomb impurities. Based on the Maxwell's and the wave equations for the vector of the medium displacements, we obtain the effective equations for the vector potential of the electromagnetic field and the component of the displacement vector of the medium. The dependence of the pulse shape on the various system parameters is analyzed.

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