scholarly journals Time-resolved tomography of ultrafast laser-matter interaction

2018 ◽  
Vol 26 (3) ◽  
pp. 2873 ◽  
Author(s):  
Klaus Bergner ◽  
Daniel Flamm ◽  
Michael Jenne ◽  
Malte Kumkar ◽  
Andreas Tünnermann ◽  
...  
Keyword(s):  
Ultrafast Laser ◽  
Time Resolved ◽  
Matter Interaction

Dynamics of Ultrafast Laser Induced Damage in Single Crystal Ni-based Superalloy During Machining

2006 ◽  
Vol 980 ◽  
Author(s):  
Joel P. McDonald ◽  
Shuwei Ma ◽  
John A. Nees ◽  
Tresa M. Pollock ◽  
Steven M. Yalisove
Keyword(s):  
Shock Wave ◽  
Laser Fluence ◽  
Ultrafast Laser ◽  
Laser Exposure ◽  
Mechanical Shock ◽  
Incident Laser ◽  
Machining Time ◽  
Time Resolved ◽  
Pump Probe ◽  
Laser Induced Damage

AbstractPump-probe imaging of femtosecond pulsed laser ablation was performed to investigate the mechanical shock induced on an intermetallic superalloy CMSX-4 during femtosecond laser machining. Time resolved shadowgraphic images were collected of the shock wave produced in the air above the target following laser exposure (0-10.3 nanoseconds). The dimensions of the shock wave were measured as a function of delay time and laser fluence (1.27 J/cm2 - 62.8 J/cm2). Time-resolved shadowgraphic images of the ablation event will be presented, and the corresponding damage morphology as a function of incident laser fluence will be discussed.

Nonlinearity and time-resolved studies of ion emission in ultrafast laser ablation of graphite

2008 ◽  
Vol 92 (4) ◽  
pp. 999-1004 ◽  
Author(s):  
A. Kaplan ◽  
M. Lenner ◽  
C. Huchon ◽  
R. E. Palmer
Keyword(s):  
Laser Ablation ◽  
Ultrafast Laser ◽  
Time Resolved ◽  
Ion Emission ◽  
Ultrafast Laser Ablation

Hydrodynamic modeling and time-resolved imaging reflectometry of the ultrafast laser-induced ablation of a thin gold film

2020 ◽  
Vol 129 ◽  
pp. 106067 ◽  
Author(s):  
M. Olbrich ◽  
T. Pflug ◽  
C. Wüstefeld ◽  
M. Motylenko ◽  
S. Sandfeld ◽  
...  
Keyword(s):  
Gold Film ◽  
Hydrodynamic Modeling ◽  
Ultrafast Laser ◽  
Thin Gold Film ◽  
Time Resolved ◽  
Time Resolved Imaging

scholarly journals Reaction microscope endstation at FLASH2

2019 ◽  
Vol 26 (3) ◽  
pp. 854-867 ◽  
Author(s):  
Georg Schmid ◽  
Kirsten Schnorr ◽  
Sven Augustin ◽  
Severin Meister ◽  
Hannes Lindenblatt ◽  
...  
Keyword(s):  
Gas Phase ◽  
Extreme Ultraviolet ◽  
Time Resolved ◽  
Pump Probe ◽  
Natural Time ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Probe Spectroscopy ◽  
Small Clusters ◽  
Reaction Microscope

A reaction microscope dedicated to multi-particle coincidence spectroscopy on gas-phase samples is installed at beamline FL26 of the free-electron laser FLASH2 in Hamburg. The main goals of the instrument are to follow the dynamics of atoms, molecules and small clusters on their natural time-scale and to study non-linear light–matter interaction with such systems. To this end, the reaction microscope is combined with an in-line extreme-ultraviolet (XUV) split-delay and focusing optics, which allows time-resolved XUV-XUV pump–probe spectroscopy to be performed.

Time-resolved measurements on reflectivity of an ultrafast laser-induced plasma mirror

2009 ◽  
Vol 16 (10) ◽  
pp. 103104 ◽  
Author(s):  
Yi Cai ◽  
Wentao Wang ◽  
Changquan Xia ◽  
Jiansheng Liu ◽  
Li Liu ◽  
...  
Keyword(s):  
Ultrafast Laser ◽  
Time Resolved ◽  
Laser Induced Plasma ◽  
Time Resolved Measurements

Phase Transitions in the Picosecond Time Domain

1986 ◽  
Vol 77 ◽  
Author(s):  
Hani E. Elsayed-Ali ◽  
Gerard A. Mourou
Keyword(s):  
Laser Heating ◽  
Lattice Relaxation ◽  
Nonequilibrium State ◽  
Metal Films ◽  
Ultrafast Laser ◽  
Femtosecond Laser Irradiation ◽  
Lattice Temperature ◽  
Physical Processes ◽  
Time Resolved ◽  
Temperature Electron

ABSTRACTThe physical processes occurring during the initial stages of ultrafast laser heating of metals are described. Femtosecond laser irradiation is used to create nonequilibrium heating in metals. In such a nonequilibrium state, the electron temperature can be heated up to a few thousand degrees above the lattice temperature. Electron-lattice relaxation is time-resolved in copper and found to be 1 – 4 ps depending on the laser heating ffuence. The technique of time-resolved electron diffraction (a lattice structural and temperature probe) is described. Utilization of this technique for lattice temperature measurement of thin metal films is demonstrated.

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