scholarly journals Implementation of a phase plate for the generation of homogeneous focal-spot intensity distributions at the high-energy short-pulse laser facility PHELIX

2019 ◽  
Vol 7 ◽  
Author(s):  
V. Bagnoud ◽  
J. Hornung ◽  
M. Afshari ◽  
U. Eisenbarth ◽  
C. Brabetz ◽  
...  
Keyword(s):  
Short Pulse ◽  
Random Phase ◽  
High Energy ◽  
Phase Plate ◽  
Work Related ◽  
Nanosecond Lasers ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Ultrashort Pulse Lasers ◽  
Phase Plates

We propose and demonstrate the use of random phase plates (RPPs) for high-energy sub-picosecond lasers. Contrarily to previous work related to nanosecond lasers, an RPP poses technical challenges with ultrashort-pulse lasers. Here, we implement the RPP near the beginning of the amplifier and image-relay it throughout the laser amplifier. With this, we obtain a uniform intensity distribution in the focus over an area 1600 times the diffraction limit. This method shows no significant drawbacks for the laser and it has been implemented at the PHELIX laser facility where it is now available for users.

scholarly journals Development of the PETAL Laser Facility and its Diagnostic Tools

10.14311/1721 ◽  
2013 ◽  
Vol 53 (2) ◽  
Author(s):  
Dimitri Batani ◽  
Sebastien Hulin ◽  
Jean Eric Ducret ◽  
Emmanuel D’Humieres ◽  
Vladimir Tikhonchuk et al.
Keyword(s):  
Short Pulse ◽  
High Energy ◽  
High Energy Density ◽  
Diagnostic Tools ◽  
Performance Goal ◽  
X Ray ◽  
Secondary Sources ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Operational Phase

The PETAL system (PETawatt Aquitaine Laser) is a high-energy short-pulse laser, currently in an advanced construction phase, to be combined with the French Mega-Joule Laser (LMJ). In a first operational phase (beginning in 2015 and 2016) PETAL will provide 1 kJ in 1 ps and will be coupled to the first four LMJ quads. The ultimate performance goal to reach 7PW (3.5 kJ with 0.5 ps pulses). Once in operation, LMJ and PETAL will form a unique facility in Europe for High Energy Density Physics (HEDP). PETAL is aiming at providing secondary sources of particles and radiation to diagnose the HED plasmas generated by the LMJ beams. It also will be used to create HED states by short-pulse heating of matter. Petal+ is an auxiliary project addressed to design and build diagnostics for experiments with PETAL. Within this project, three types of diagnostics are planned: a proton spectrometer, an electronspectrometer and a large-range X-ray spectrometer.

scholarly journals Modeling of High-Energy Particles and Radiation Production for Multipetawatt Laser Facilities

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
D. Raffestin ◽  
D. Batani ◽  
J. Caron ◽  
J. Baggio ◽  
G. Boutoux ◽  
...  
Keyword(s):  
High Power ◽  
Short Pulse ◽  
High Energy ◽  
X Rays ◽  
High Power Laser ◽  
Power Laser ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Laser Systems ◽  
High Energy Particles

The advent of high-energy short-pulse laser beams poses new problems related to radiation protection. The radiation generated in experiments using multipetawatt laser systems leads to prompt doses and potentially to the activation of the materials within the interaction chamber and the experimental hall. Despite many new PW laser facilities are nowadays entering into operation, this question has received little attention until now. In this paper, we evaluate the radiological effects induced by the operation of a high-power laser facility. Two working regimes are considered related to the production of hard X-rays and energetic protons. The methodology is general and may be applied for the design of experiments with any high-power laser systems.

High-energy, high-resolution x-ray imaging on the Trident short-pulse laser facility

2008 ◽  
Vol 79 (10) ◽  
pp. 10E905 ◽  
Author(s):  
J. Workman ◽  
J. Cobble ◽  
K. Flippo ◽  
D. C. Gautier ◽  
S. Letzring
Keyword(s):  
High Resolution ◽  
Pulse Laser ◽  
Short Pulse ◽  
High Energy ◽  
X Ray ◽  
Short Pulse Laser ◽  
X Ray Imaging ◽  
Laser Facility

High-energy X-ray radiography of laser shock loaded metal dynamic fragmentation using high-intensity short-pulse laser

2018 ◽  
Vol 89 (11) ◽  
pp. 115106 ◽  
Author(s):  
Genbai Chu ◽  
Tao Xi ◽  
Minghai Yu ◽  
Wei Fan ◽  
Yongqiang Zhao ◽  
...  
Keyword(s):  
Pulse Laser ◽  
High Intensity ◽  
Short Pulse ◽  
High Energy ◽  
Laser Shock ◽  
X Ray ◽  
Dynamic Fragmentation ◽  
Short Pulse Laser

Broadening and Amplification Characteristics of Fiber Front End for High-Power Short Pulse Laser Facility

2009 ◽  
Vol 36 (1) ◽  
pp. 160-165
Author(s):  
张锐 Zhang Rui ◽  
王建军 Wang Jianjun ◽  
林宏奂 Lin Honghuan ◽  
李明中 Li Mingzhong ◽  
车雅良 Che Yaliang ◽  
...  
Keyword(s):  
Pulse Laser ◽  
High Power ◽  
Short Pulse ◽  
Short Pulse Laser ◽  
Front End ◽  
Laser Facility

scholarly journals The implementation and data analysis of an interferometer for intense short pulse laser experiments

2016 ◽  
Vol 4 ◽  
Author(s):  
Jaebum Park ◽  
Hector A. Baldis ◽  
Hui Chen
Keyword(s):  
Data Analysis ◽  
Short Pulse ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
Optical Probe ◽  
Fringe Analysis ◽  
Energetic Electrons ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Laser Experiments

We present an interferometry setup and the detailed fringe analysis method for intense short pulse (SP) laser experiments. The interferometry scheme was refined through multiple campaigns to investigate the effects of pre-plasmas on energetic electrons at the Jupiter Laser Facility at Lawrence Livermore National Laboratory. The interferometer used a frequency doubled ( $\unicode[STIX]{x1D706}=0.527~\unicode[STIX]{x03BC}\text{m}$ ) 0.5 ps long optical probe beam to measure the pre-plasma density, an invaluable parameter to better understand how varying pre-plasma conditions affect the characteristics of the energetic electrons. The hardware of the diagnostic, data analysis and example data are presented. The diagnostic setup and the analysis procedure can be employed for any other SP laser experiments and interferograms, respectively.

The OMEGA EP high-energy, short-pulse Laser System

2008 ◽  
Author(s):  
L. J. Waxer ◽  
M. J. Guardalben ◽  
J. H. Kelly ◽  
B. E. Kruschwitz ◽  
J. Qiao ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
Laser System ◽  
High Energy ◽  
Short Pulse Laser

Focal spot measurement in ultra-intense ultra-short pulse laser facility

2005 ◽  
Author(s):  
Lanqin Liu ◽  
Hansheng Peng ◽  
Kainan Zhou ◽  
Xiaodong Wang ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Focal Spot ◽  
Short Pulse ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser

Some topical issues in research on short-pulse laser-produced plasmas

1980 ◽  
Vol 298 (1439) ◽  
pp. 351-364 ◽  
Keyword(s):  
Recent Work ◽  
Pulse Laser ◽  
Short Pulse ◽  
Fast Time ◽  
Physical Processes ◽  
Time Resolved ◽  
X Ray ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Interaction Phenomena

A brief review is presented of the main physical processes in laser-produced plasmas. This is followed by illustrations taken from recent work at the S.R.C. Central Laser Facility of the use of X-ray and visible streak cameras for fast time resolved measurements of implosion and interaction phenomena in laser-produced plasmas.

Sign in / Sign up

Export Citation Format

Share Document