Stationary SRS Regimes in the Fields of Ultrashort Pulses

1982 ◽  
pp. 113-122
Author(s):  
T. M. Makhviladze ◽  
M. E. Sarychev
Keyword(s):  
Ultrashort Pulses

Functional Failures and Noise Arising under the Effect of Powerful Ultrashort Pulses on Mobile Phones and Radio Transmitters

2004 ◽  
Vol 62 (11) ◽  
pp. 971-976
Author(s):  
V. B. Avdeev ◽  
D. V. Avdeeva ◽  
A. V. Berdyshev ◽  
G. V. Makarov ◽  
S. N. Panychev ◽  
...  
Keyword(s):  
Mobile Phones ◽  
Ultrashort Pulses ◽  
Radio Transmitters

Influence of the Vector Order Parameter on the Dynamics of 3D Ultrashort Pulses in Carbon Nanotubes

2020 ◽  
Vol 12 (4) ◽  
pp. 04016-1-04016-4
Author(s):  
N. N. Konobeeva ◽  
◽  
M. B. Belonenko ◽  
Keyword(s):  
Carbon Nanotubes ◽  
Order Parameter ◽  
Ultrashort Pulses

Ultrashort pulses propagation through different approaches of the Split-Step Fourier method

2018 ◽  
Vol 1 (3) ◽  
pp. 2
Author(s):  
José Stênio De Negreiros Júnior ◽  
Daniel Do Nascimento e Sá Cavalcante ◽  
Jermana Lopes de Moraes ◽  
Lucas Rodrigues Marcelino ◽  
Francisco Tadeu De Carvalho Belchior Magalhães ◽  
...  
Keyword(s):  
Energy Conservation ◽  
Optical Pulse ◽  
Time Window ◽  
Fourier Method ◽  
Ultrashort Pulses ◽  
Nonlinear Effects ◽  
Single Mode ◽  
Time Algorithm ◽  
Optical Pulses ◽  
Running Time

Simulating the propagation of optical pulses in a single mode optical fiber is of fundamental importance for studying the several effects that may occur within such medium when it is under some linear and nonlinear effects. In this work, we simulate it by implementing the nonlinear Schrödinger equation using the Split-Step Fourier method in some of its approaches. Then, we compare their running time, algorithm complexity and accuracy regarding energy conservation of the optical pulse. We note that the method is simple to implement and presents good results of energy conservation, besides low temporal cost. We observe a greater precision for the symmetrized approach, although its running time can be up to 126% higher than the other approaches, depending on the parameters set. We conclude that the time window must be adjusted for each length of propagation in the fiber, so that the error regarding energy conservation during propagation can be reduced.

Influence of ultrashort pulses of electromagnetic radiation on parameters of metal-insulator-semiconductor structures

2004 ◽  
Vol 38 (12) ◽  
pp. 1390-1393
Author(s):  
V. A. Terekhov ◽  
A. N. Man’ko ◽  
E. N. Bormontov ◽  
V. N. Levchenko ◽  
S. Yu. Trebunskikh ◽  
...  
Keyword(s):  
Electromagnetic Radiation ◽  
Ultrashort Pulses ◽  
Metal Insulator ◽  
Metal Insulator Semiconductor ◽  
Semiconductor Structures

Tin monoselenide based saturable absorbers for the generation of ultrashort pulses

2020 ◽  
Vol 108 ◽  
pp. 103349
Author(s):  
Guomei Wang ◽  
Wenfei Zhang ◽  
Fei Xing ◽  
Kezhen Han ◽  
Huanian Zhang ◽  
...  
Keyword(s):  
Ultrashort Pulses ◽  
Saturable Absorbers ◽  
Tin Monoselenide

scholarly journals X-ray diffraction analysis of matter taking into account the second harmonic in the scattering of powerful ultrashort pulses of an electromagnetic field

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. K. Eseev ◽  
A. A. Goshev ◽  
K. A. Makarova ◽  
D. N. Makarov
Keyword(s):  
Electromagnetic Field ◽  
Diffraction Analysis ◽  
Diffraction Pattern ◽  
Second Harmonic ◽  
Ultrashort Pulses ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scattering Spectra ◽  
Technical Possibility ◽  
2D And 3D

AbstractIt is well known that the scattering of ultrashort pulses (USPs) of an electromagnetic field in the X-ray frequency range can be used in diffraction analysis. When such USPs are scattered by various polyatomic objects, a diffraction pattern appears from which the structure of the object can be determined. Today, there is a technical possibility of creating powerful USP sources and the analysis of the scattering spectra of such pulses is a high-precision instrument for studying the structure of matter. As a rule, such scattering occurs at a frequency close to the carrier frequency of the incident USP. In this work, it is shown that for high-power USPs, where the magnetic component of USPs cannot be neglected, scattering at the second harmonic appears. The scattering of USPs by the second harmonic has a characteristic diffraction pattern which can be used to judge the structure of the scattering object; combining the scattering spectra at the first and second harmonics therefore greatly enhances the diffraction analysis of matter. Scattering spectra at the first and second harmonics are shown for various polyatomic objects: examples considered are 2D and 3D materials such as graphene, carbon nanotubes, and hybrid structures consisting of nanotubes. The theory developed in this work can be applied to various multivolume objects and is quite simple for X-ray structural analysis, because it is based on analytical expressions.

Modeling interaction of ultrashort pulses with ENZ materials

2021 ◽  
Vol 71 ◽  
pp. 492-505
Author(s):  
Camille Elloh ◽  
Gaston Edah ◽  
Amour Ayela ◽  
Anjan Biswas ◽  
Mehmet Ekici ◽  
...  
Keyword(s):  
Ultrashort Pulses
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