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.

scholarly journals Предельно короткие оптические импульсы в фотонном кристалле из углеродных нанотрубок под действием внешнего поля накачки

2021 ◽  
Vol 129 (1) ◽  
pp. 92
Author(s):  
И.С. Двужилов ◽  
Ю.В. Двужилова ◽  
М.Б. Белоненко
Keyword(s):  
Carbon Nanotubes ◽  
Photonic Crystal ◽  
Optical Pulse ◽  
Modulation Depth ◽  
Optical Pulses ◽  
Electromagnetic Pulses ◽  
Dissipative Forces ◽  
The Stability ◽  
Semiconductor Carbon Nanotubes ◽  
Extremely Short Optical Pulses

In this work, we considered the evolution of extremely short optical pulses in a photonic crystal of semiconductor carbon nanotubes placed in an external pumping field. The possibility of stable propagation of electromagnetic pulses under conditions of a pumping and damping field, due to the balance of dissipative forces and an external field, is shown. The stability of the shape of an extremely short optical pulse at long times is demonstrated with a change in various parameters of the medium, such as the period of inhomogeneity of carbon nanotubes in a photonic crystal and the modulation depth of the refractive index.

EXTREMELY SHORT OPTICAL PULSES IN CARBON NANOTUBES IN DISPERSIVE NONMAGNETIC DIELECTRIC MEDIA

2011 ◽  
Vol 25 (25) ◽  
pp. 3401-3408 ◽  
Author(s):  
NATALIA N. YANYUSHKINA ◽  
MIKHAIL B. BELONENKO ◽  
NIKOLAY G. LEBEDEV ◽  
ALEXANDER V. ZHUKOV ◽  
MAXIM PALIY
Keyword(s):  
Carbon Nanotubes ◽  
Maxwell Equations ◽  
Pulse Amplitude ◽  
Dielectric Medium ◽  
Initial Pulse ◽  
Sine Gordon Equation ◽  
Optical Pulses ◽  
Effective Equation ◽  
Dielectric Media ◽  
Extremely Short Optical Pulses

We consider Maxwell equations for an electromagnetic field propagating in carbon nanotubes (CNTs) placed on a dispersive nonmagnetic dielectric medium. We obtain the effective equation analogous to the classical sine-Gordon equation. Then it has been analyzed numerically. We have revealed the dependence of the pulse on the type of CNT and on the initial pulse amplitude, as well as on the medium dispersion constants.

Extremely short optical pulses of airy section in the environment of oriented carbon nanotubes

2020 ◽  
Author(s):  
U. M. Samarov ◽  
T. B. Shilov ◽  
Yu. V. Dvuzhilova ◽  
I. A. Chelnintsev ◽  
I. S. Dvuzhilov
Keyword(s):  
Carbon Nanotubes ◽  
Optical Pulses ◽  
Extremely Short Optical Pulses

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 Световые пули с бесселевым поперечным сечением в среде углеродных нанотрубок

2022 ◽  
Vol 130 (3) ◽  
pp. 407
Author(s):  
А.М. Белоненко ◽  
И.С. Двужилов ◽  
Ю.В. Двужилова ◽  
М.Б. Белоненко
Keyword(s):  
Carbon Nanotubes ◽  
Key Words ◽  
Cross Section ◽  
Nonlinear Medium ◽  
Three Dimensional ◽  
Optical Pulses ◽  
Limited Region ◽  
Conservation Of Energy ◽  
Light Bullets ◽  
Extremely Short Optical Pulses

The propagation of three-dimensional extremely short optical pulses (light bullets) with a Bessel cross section in a medium of carbon nanotubes placed in an optical resonator is considered. As a result of numerical calculations, it was found that such pulses propagate stably with conservation of energy in a limited region of space, including at large times of the order of 100 ps. Key words: extremely short optical pulses, nonlinear medium, light bullets, carbon nanotubes.

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