Observation of Free Induction Signals of Radicals Excited by Terahertz Free-Electron Laser Pulses

2019 ◽  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Laser Pulses ◽  
Free Induction

Observation of Free Induction Decay Signals of OH Radicals Excited by Terahertz Free-Electron Laser Pulses

2019 ◽  
Vol 55 (1) ◽  
pp. 18-22 ◽  
Author(s):  
E. N. Chesnokov ◽  
L. N. Krasnoperov ◽  
V. V. Kubarev ◽  
P. V. Koshlyakov
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Free Induction Decay ◽  
Laser Pulses ◽  
Oh Radicals ◽  
Free Induction

Generation and measurement of intense few-femtosecond superradiant extreme-ultraviolet free-electron laser pulses

2021 ◽  
Author(s):  
Najmeh S. Mirian ◽  
Michele Di Fraia ◽  
Simone Spampinati ◽  
Filippo Sottocorona ◽  
Enrico Allaria ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Extreme Ultraviolet ◽  
Laser Pulses

scholarly journals Single- and two-color attosecond hard x-ray free-electron laser pulses with nonlinear compression

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Alexander Malyzhenkov ◽  
Yunieski P. Arbelo ◽  
Paolo Craievich ◽  
Philipp Dijkstal ◽  
Eugenio Ferrari ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Laser Pulses ◽  
X Ray ◽  
Nonlinear Compression

scholarly journals Measuring the frequency chirp of extreme-ultraviolet free-electron laser pulses by transient absorption spectroscopy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Thomas Ding ◽  
Marc Rebholz ◽  
Lennart Aufleger ◽  
Maximilian Hartmann ◽  
Veit Stooß ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Transient Absorption ◽  
Extreme Ultraviolet ◽  
Ultrashort Pulses ◽  
Laser Pulses ◽  
Transient Absorption Spectroscopy ◽  
Energy Structure ◽  
Frequency Chirp

AbstractHigh-intensity ultrashort pulses at extreme ultraviolet (XUV) and x-ray photon energies, delivered by state-of-the-art free-electron lasers (FELs), are revolutionizing the field of ultrafast spectroscopy. For crossing the next frontiers of research, precise, reliable and practical photonic tools for the spectro-temporal characterization of the pulses are becoming steadily more important. Here, we experimentally demonstrate a technique for the direct measurement of the frequency chirp of extreme-ultraviolet free-electron laser pulses based on fundamental nonlinear optics. It is implemented in XUV-only pump-probe transient-absorption geometry and provides in-situ information on the time-energy structure of FEL pulses. Using a rate-equation model for the time-dependent absorbance changes of an ionized neon target, we show how the frequency chirp can be directly extracted and quantified from measured data. Since the method does not rely on an additional external field, we expect a widespread implementation at FELs benefiting multiple science fields by in-situ on-target measurement and optimization of FEL-pulse properties.

Charge and Nuclear Dynamics Induced by Deep Inner-Shell Multiphoton Ionization of CH3I Molecules by Intense X-ray Free-Electron Laser Pulses

2015 ◽  
Vol 6 (15) ◽  
pp. 2944-2949 ◽  
Author(s):  
Koji Motomura ◽  
Edwin Kukk ◽  
Hironobu Fukuzawa ◽  
Shin-ichi Wada ◽  
Kiyonobu Nagaya ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Multiphoton Ionization ◽  
Laser Pulses ◽  
Nuclear Dynamics ◽  
X Ray

scholarly journals Imaging at an x-ray absorption edge using free electron laser pulses for interface dynamics in high energy density systems

2017 ◽  
Vol 88 (5) ◽  
pp. 053501 ◽  
Author(s):  
M. A. Beckwith ◽  
S. Jiang ◽  
A. Schropp ◽  
A. Fernandez-Pañella ◽  
H. G. Rinderknecht ◽  
...  
Keyword(s):  
Energy Density ◽  
Absorption Edge ◽  
Free Electron ◽  
Free Electron Laser ◽  
Laser Pulses ◽  
High Energy ◽  
High Energy Density ◽  
Interface Dynamics ◽  
X Ray ◽  
X Ray Absorption

scholarly journals All-optical single shot complete electric field measurement of extreme ultraviolet free electron laser pulses

Optica ◽  
2021 ◽  
Author(s):  
William Peters ◽  
Travis Jones ◽  
Anatoly Efimov ◽  
Emanuele Pedersoli ◽  
Laura Foglia ◽  
...  
Keyword(s):  
Electric Field ◽  
Free Electron ◽  
Field Measurement ◽  
Free Electron Laser ◽  
Extreme Ultraviolet ◽  
Laser Pulses ◽  
Single Shot ◽  
Electric Field Measurement ◽  
All Optical
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