scholarly journals Picosecond high power KrF laser system for X-ray laser research

1990 ◽  
Vol 8 (1-2) ◽  
pp. 299-306 ◽  
Author(s):  
T. Tomie ◽  
I. Okuda ◽  
Y. Owadano ◽  
M. Tanimoto ◽  
Y. Matsumoto ◽  
...  
Keyword(s):  
Energy Density ◽  
Total Energy ◽  
High Power ◽  
Recovery Time ◽  
Laser System ◽  
Detailed Design ◽  
X Ray ◽  
Fundamental Parameters ◽  
Krf Laser ◽  
Gain Recovery

Fundamental parameters are studied for the detailed design of a picosecond high power KrF laser system. The saturation energy density of 2.3 mJ/cm2 and gain recovery time of 1.9 ns in an e-beam pumped KrF laser are observed. A 6 ps pulse is amplified to 1.9 J. The system at the Electrotechnical Laboratory is expected to deliver 10 ps pulses with total energy of several tens of joules in several beams.

scholarly journals Active Stabilization of the Beam Pointing of a High- Power KrF Laser System

2015 ◽  
Vol 22 (1) ◽  
pp. 165-172 ◽  
Author(s):  
A. Barna ◽  
I. B. Földes ◽  
J. Bohus ◽  
S. Szatmári
Keyword(s):  
High Power ◽  
Laser System ◽  
Spot Size ◽  
Electric Signal ◽  
Simple Arrangement ◽  
Krf Laser ◽  
Active Stabilization ◽  
Directional Change ◽  
Position Sensitive Detectors

Abstract An active beam-pointing stabilization system has been developed for a high-power KrF laser system to eliminate the long-term drift of the directional change of the beam in order to have a stable focusing to a high intensity. The control of the beam direction was achieved by a motor-driven mirror activated by an electric signal obtained by monitoring the position of the focus of the output beam. Instead of large sized UV-sensitive position sensitive detectors a simple arrangement with scatter plates and photodiodes are used to measure the directionality of the beam. After the beam stabilization the long-term residual deviation of the laser shots is ~14 μrad, which is comparable to the shot-to-shot variation of the beam (~12 μrad). This deviation is small enough to keep the focal spot size in a micrometer range when tightly focusing the beam using off-axis parabolic mirrors.

Picosecond high power terawatt Nd: Glass laser system for laser fusion and X-ray laser research

1976 ◽  
Vol 18 (1) ◽  
pp. 169-170 ◽  
Author(s):  
H. Kuroda ◽  
H. Masuko ◽  
S. Maekawa
Keyword(s):  
High Power ◽  
Laser System ◽  
Laser Fusion ◽  
Glass Laser ◽  
X Ray

The design of high-power multistage KrF laser system "GARPUN"

2005 ◽  
Author(s):  
N.G. Basov ◽  
V.G. Bakaev ◽  
G.E. Metreveli ◽  
G.V. Sychugov ◽  
A.D. Vadkovskii ◽  
...  
Keyword(s):  
High Power ◽  
Laser System ◽  
Krf Laser

Coded aperture x-ray imaging of high power laser-plasma interactions on the Vulcan Laser System

2018 ◽  
Author(s):  
Robert I. Heathcote ◽  
Nicola Booth ◽  
Robert J. Clarke ◽  
Asha Anderson-Asubonteng ◽  
Matthew P. Selwood ◽  
...  
Keyword(s):  
High Power ◽  
Laser Plasma ◽  
Laser System ◽  
Coded Aperture ◽  
High Power Laser ◽  
Power Laser ◽  
Plasma Interactions ◽  
X Ray ◽  
Laser Plasma Interactions ◽  
X Ray Imaging

scholarly journals Development of a high-power KrF laser system, ASHURA

1989 ◽  
Vol 7 (3) ◽  
pp. 383-392 ◽  
Author(s):  
Y. Owadano ◽  
I. Okuda ◽  
Y. Matsumoto ◽  
M. Tanimoto ◽  
T. Tomie ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
Present Status ◽  
Laser System ◽  
Maximum Power ◽  
Main Amplifier ◽  
Krf Laser ◽  
Wall Plug Efficiency ◽  
Time Pulse

The present status of the development of a high-power KrF laser system, Ashura, is described. The main amplifier has generated 710 J (95 ns) at the pumping density of 1·lMW/cm3 with the wall plug efficiency of 2·0%. Maximum power of 9·0 GW (200 J/22 ns) per beam has been obtained from the beam lines of six-time pulse multiplexing. Power density of 1 × 1014 W/cm2 has been achieved on target with a 10−6 pre-pulse.

High-power subpicosecond KrF laser system

1986 ◽  
Author(s):  
I. A. McIntyre ◽  
A. P. Schwarzenbach ◽  
T. S. Luk ◽  
A. McPherson ◽  
K. Boyer ◽  
...  
Keyword(s):  
High Power ◽  
Laser System ◽  
Krf Laser

Picosecond high-power KrF laser system

1986 ◽  
Author(s):  
Shuntaro Watanabe ◽  
Akira Endoh ◽  
Masayoshi Watanabe
Keyword(s):  
High Power ◽  
Laser System ◽  
Krf Laser

XRD Characterization for Al- and N-Doped 3C-SiC on Si (100) Substrate after Pulsed Excimer Laser Anneal

2012 ◽  
Vol 717-720 ◽  
pp. 497-500
Author(s):  
Kung Yen Lee ◽  
Yan Hao Huang ◽  
Chih Fang Huang ◽  
Cheng Yueh Chung ◽  
Shun Chiu Lin ◽  
...  
Keyword(s):  
Energy Density ◽  
Total Energy ◽  
Excimer Laser ◽  
Peak Shift ◽  
Bragg Diffraction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Laser Anneal

This paper characterizes Al, N doped and undoped 3C-SiC samples after pulsed excimer laser anneal by using X-ray diffraction (XRD) and atomic force microscopy (AFM). In order to protect surface morphology, low energy density of 0.2444 J/cm2 per shot was applied to Al and N doped samples. The results show damage recovery is corresponding to the amount of total energy applied to the surface. The peak shift of Bragg diffraction spectra of Al doped samples are almost independent of the amount of total energy. As the energy density is reduced to 0.0667 J/cm2 per shot and applied to undoped samples, the peaks of Bragg diffraction spectra of undoped samples are shifted. However, the peaks of Bragg diffraction spectra of undoped samples annealed with combination of energy densities of 0.0667 and 0.2444 J/cm2 are not shifted.

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