scholarly journals Wavelength dependence of the damage threshold of inorganic materials under extreme-ultraviolet free-electron-laser irradiation

2009 ◽  
Vol 95 (11) ◽  
pp. 111104 ◽  
Author(s):  
S. P. Hau-Riege ◽  
R. A. London ◽  
R. M. Bionta ◽  
D. Ryutov ◽  
R. Soufli ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Free Electron ◽  
Free Electron Laser ◽  
Extreme Ultraviolet ◽  
Damage Threshold ◽  
Wavelength Dependence ◽  
Inorganic Materials

scholarly journals Damage threshold of platinum/carbon multilayers under hard X-ray free-electron laser irradiation

2015 ◽  
Vol 23 (22) ◽  
pp. 29032 ◽  
Author(s):  
Jangwoo Kim ◽  
Ayaka Nagahira ◽  
Takahisa Koyama ◽  
Satoshi Matsuyama ◽  
Yasuhisa Sano ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Free Electron ◽  
Free Electron Laser ◽  
Damage Threshold ◽  
X Ray

scholarly journals Damage threshold of inorganic solids under free-electron-laser irradiation at 32.5nm wavelength

2007 ◽  
Vol 90 (17) ◽  
pp. 173128 ◽  
Author(s):  
S. P. Hau-Riege ◽  
R. A. London ◽  
R. M. Bionta ◽  
M. A. McKernan ◽  
S. L. Baker ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Free Electron ◽  
Free Electron Laser ◽  
Damage Threshold ◽  
Inorganic Solids

scholarly journals Damage threshold of inorganic solids under free-electron-laser irradiation at 32.5 nm wavelength

2007 ◽  
Author(s):  
S Hau-Riege ◽  
R London ◽  
R Bionta ◽  
M McKernan ◽  
S Baker ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Free Electron ◽  
Free Electron Laser ◽  
Damage Threshold ◽  
Inorganic Solids

scholarly journals Free Electron Laser Measurement of Liquid Carbon Reflectivity in the Extreme Ultraviolet

Photonics ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 35
Author(s):  
Sumana Raj ◽  
Shane Devlin ◽  
Riccardo Mincigrucci ◽  
Craig Schwartz ◽  
Emiliano Principi ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Lattice Dynamics ◽  
Extreme Ultraviolet ◽  
Wavelength Dependence ◽  
Optically Pumped ◽  
Liquid Carbon ◽  
Electronic Temperature ◽  
Time Resolved ◽  
Probing Depth

Ultrafast time-resolved extreme ultraviolet (EUV) reflectivity measurements of optically pumped amorphous carbon (a-C) have been performed with the FERMI free electron laser (FEL). This work extends the energy range used in previous reflectivity studies and adds polarization dependence. The EUV probe is known to be sensitive to lattice dynamics, since in this range the reflectivity is essentially unaffected by the photo-excited surface plasma. The exploitation of both s- and p-polarized EUV radiation permits variation of the penetration depth of the probe; a significant increase in the characteristic time is observed upon increasing the probing depth (1 vs. 5 ps) due to hydrodynamic expansion and consequent destruction of the excited region, implying that there is only a short window during which the probed region is in the isochoric regime. A weak wavelength dependence of the reflectivity is found, consistent with previous measurements and implying a maximum electronic temperature of 0.8 eV ± 0.4.

Effect of Chirality by the Free Electron Laser Irradiation

2010 ◽  
Vol 130 (2) ◽  
pp. 209-212 ◽  
Author(s):  
Daisuke Ishizuka ◽  
Keijiro Sakai ◽  
Nobuyuki Iwata ◽  
Hirofumi Yajima ◽  
Hiroshi Yamamoto
Keyword(s):  
Laser Irradiation ◽  
Free Electron ◽  
Free Electron Laser

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 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.

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