scholarly journals Ultrafast dynamics of laser-pulse excited semiconductors: non-Markovian quantum kinetic equations with nonequilibrium correlations

2004 ◽  
Vol 7 (3) ◽  
pp. 579 ◽  
Author(s):  
Ignatyuk ◽  
Morozov
Keyword(s):  
Laser Pulse ◽  
Kinetic Equations ◽  
Ultrafast Dynamics ◽  
Nonequilibrium Correlations

scholarly journals Influence of laser pulse shaping on the ultrafast dynamics in antiferromagnetic NiO

2010 ◽  
Vol 82 (17) ◽  
Author(s):  
Andrea Rubano ◽  
Takuya Satoh ◽  
Alexey Kimel ◽  
Andrey Kirilyuk ◽  
Theo Rasing ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Pulse Shaping ◽  
Ultrafast Dynamics ◽  
Laser Pulse Shaping

scholarly journals Ultrafast Dynamics of a Nucleobase Analogue Illuminated by a Short Intense X-ray Free Electron Laser Pulse

2016 ◽  
Vol 6 (2) ◽  
Author(s):  
K. Nagaya ◽  
K. Motomura ◽  
E. Kukk ◽  
H. Fukuzawa ◽  
S. Wada ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Free Electron ◽  
Free Electron Laser ◽  
Ultrafast Dynamics ◽  
X Ray

scholarly journals Генерация второй оптической гармоники и ее фотоиндуцированная динамика в сегнетоэлектрике-полупроводнике Sn-=SUB=-2-=/SUB=-P-=SUB=-2-=/SUB=-S-=SUB=-6-=/SUB=-

2018 ◽  
Vol 60 (1) ◽  
pp. 33
Author(s):  
К.А. Брехов ◽  
К.А. Гришунин ◽  
Д.В. Афанасьев ◽  
С.В. Семин ◽  
Н.Э. Шерстюк ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Electric Polarization ◽  
Ultrafast Dynamics ◽  
Optical Pump ◽  
Pump Probe

AbstractBy means of optical pump–probe technique, the ultrafast dynamics of nonlinear optical response of the ferroelectric semiconductor Sn_2P_2S_6 crystal excited with a femtosecond laser pulse has been investigated. It has been shown that, under the action of femtosecond pulses, change in optical second harmonic generation occurs in the sample, which can be due to screening of existing electric polarization.

scholarly journals Ultrafast dynamics and scattering of protic ionic liquids induced by XFEL pulses

2021 ◽  
Vol 28 (5) ◽  
pp. 1296-1308 ◽  
Author(s):  
Kajwal Kumar Patra ◽  
Ibrahim Eliah Dawod ◽  
Andrew V. Martin ◽  
Tamar L. Greaves ◽  
Daniel Persson ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Form Factors ◽  
Atomic Motion ◽  
Organic Liquids ◽  
Ultrafast Dynamics ◽  
X Rays ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid ◽  
X Ray ◽  
Scattering Signal

X-rays are routinely used for structural studies through scattering, and femtosecond X-ray lasers can probe ultrafast dynamics. We aim to capture the femtosecond dynamics of liquid samples using simulations and deconstruct the interplay of ionization and atomic motion within the X-ray laser pulse. This deconstruction is resolution dependent, as ionization influences the low momentum transfers through changes in scattering form factors, while atomic motion has a greater effect at high momentum transfers through loss of coherence. Our methodology uses a combination of classical molecular dynamics and plasma simulation on a protic ionic liquid to quantify the contributions to the scattering signal and how these evolve with time during the X-ray laser pulse. Our method is relevant for studies of organic liquids, biomolecules in solution or any low-Z materials at liquid densities that quickly turn into a plasma while probed with X-rays.

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