Multiphoton scattering of ultrashort pulses of an electromagnetic field by polyatomic systems

2020 ◽  
Author(s):  
M. P. Zakamennih ◽  
D. N. Makarov
Keyword(s):  
Electromagnetic Field ◽  
Ultrashort Pulses ◽  
Polyatomic Systems

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.

Generation and detection of ultrashort pulses of electromagnetic field in the terahertz range and their application for spectroscopy

2005 ◽  
Vol 48 (10-11) ◽  
pp. 837-843 ◽  
Author(s):  
R. A. Akhmedzhanov ◽  
A. I. Korytin ◽  
A. G. Litvak ◽  
A. M. Sergeev ◽  
E. V. Suvorov
Keyword(s):  
Electromagnetic Field ◽  
Ultrashort Pulses ◽  
Terahertz Range

Two-dimensional ultrashort pulses in topological Kondo insulators

2019 ◽  
Vol 34 (03) ◽  
pp. 2050035
Author(s):  
Natalia N. Konobeeva ◽  
Alexander V. Zhukov ◽  
Mikhail B. Belonenko
Keyword(s):  
Electromagnetic Field ◽  
Electromagnetic Pulse ◽  
Pulse Propagation ◽  
Ultrashort Laser Pulse ◽  
Ultrashort Pulses ◽  
Two Dimensional ◽  
Initial Amplitude ◽  
Kondo Insulators ◽  
Ultrashort Pulse Propagation ◽  
Ultrashort Laser

In this paper, we study the propagation of the electromagnetic field of an ultrashort laser pulse in a Kondo topological insulator. We analyze some specific peculiarities observed when varying the initial amplitude and velocity of the electromagnetic pulse, as well as the hybridization matrix. We find that the hybridization parameter — quantifying the strength of the interaction between electrons of different shells — has a very particular influence on the ultrashort pulse propagation, and provides a means to control the amplitude of the main pulse, as well as the “tail” in its wake.

Comparison of high- and low-frequency electromagnetic field analysis

1993 ◽  
Vol 3 (3) ◽  
pp. 363-371 ◽  
Author(s):  
A. Konrad ◽  
I. A. Tsukerman
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
Field Analysis
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