Terahertz gunn amplification in semiconductor carbon nanotubes

2005 ◽  
Author(s):  
M. Dragoman ◽  
D. Dragoman
Keyword(s):  
Carbon Nanotubes ◽  
Semiconductor Carbon Nanotubes

Interaction of Laser Pulse with Semiconductor Carbon Nanotubes: Rabi Oscillations

2011 ◽  
Author(s):  
Nader Daneshfar ◽  
Muhammed Hasan Aslan ◽  
Ahmet Yayuz Oral ◽  
Mehmet Özer ◽  
Süleyman Hikmet Çaglar
Keyword(s):  
Carbon Nanotubes ◽  
Laser Pulse ◽  
Rabi Oscillations ◽  
Semiconductor Carbon Nanotubes

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.

Bright and dark excitons in semiconductor carbon nanotubes: insights from electronic structure calculations

2009 ◽  
Vol 11 (21) ◽  
pp. 4113 ◽  
Author(s):  
Svetlana Kilina ◽  
Ekaterina Badaeva ◽  
Andrei Piryatinski ◽  
Sergei Tretiak ◽  
Avadh Saxena ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structure ◽  
Electronic Structure Calculations ◽  
Semiconductor Carbon Nanotubes ◽  
Structure Calculations

PROPAGATION OF LASER BEAMS IN AN ARRAY OF SEMICONDUCTOR CARBON NANOTUBES

2013 ◽  
Vol 27 (07) ◽  
pp. 1350045 ◽  
Author(s):  
ALEXANDER V. ZHUKOV ◽  
ROLAND BOUFFANAIS ◽  
MIKHAIL B. BELONENKO ◽  
E. G. FEDOROV
Keyword(s):  
Carbon Nanotubes ◽  
Laser Beam ◽  
Maxwell Equations ◽  
Initial Distribution ◽  
Laser Beams ◽  
Initial Amplitude ◽  
Effective Equation ◽  
Gaussian Profile ◽  
Semiconductor Carbon Nanotubes ◽  
Field Intensity Distribution

In this paper, we consider propagation of a monochromatic laser beam in an array of semiconductor carbon nanotubes. Initial distribution of the beam intensity is taken in the form of a Gaussian profile in the plane perpendicular to the wave vector. The electromagnetic field in an array of nanotubes is described by Maxwell equations, reduced to a multidimensional wave equation. With an approximation of the slowly varying amplitudes and phases, we derive the effective equation describing the time-averaged field intensity distribution of the laser beam in a medium. Numerical solution of the derived equations allows us to analyze the dependence of the diffractive spreading of the beam on its frequency and initial amplitude. Furthermore, the influence of the nanotube radius on the diffractive spreading of the laser beam is investigated.

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