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Advanced 20 TW Ti:S laser system for X-ray laser and coherent XUV generation irradiated by ultra-high intensities

Published online by Cambridge University Press:  07 June 2005

HIROTO KURODA ,
MASAYUKI SUZUKI ,
RASHID GANEEV ,
JUN ZHANG ,
MOTOYOSHI BABA ,
TSUNEYUKI OZAKI ,
ZHI YI WEI  and
JIE ZHANG
HIROTO KURODA
Affiliation:
The Institute for Solid State Physics, The University of Tokyo, Chiba, Japan
MASAYUKI SUZUKI
Affiliation:
The Institute for Solid State Physics, The University of Tokyo, Chiba, Japan
RASHID GANEEV
Affiliation:
The Institute for Solid State Physics, The University of Tokyo, Chiba, Japan
JUN ZHANG
Affiliation:
The Institute for Solid State Physics, The University of Tokyo, Chiba, Japan
MOTOYOSHI BABA
Affiliation:
The Institute for Solid State Physics, The University of Tokyo, Chiba, Japan
TSUNEYUKI OZAKI
Affiliation:
Institut national de la recherche scientifique, Quebec, Canada
ZHI YI WEI
Affiliation:
Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
JIE ZHANG
Affiliation:
Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
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Abstract

In order to develop a high repetition rate X-ray lasers, the longitudinal-pumped transient collisional excitation (TCE) X-ray laser is one of the most effective pumping schemes. The high directive Ni-like Mo 18.9 nm soft X-ray laser pumped by modest laser energy has already been demonstrated by using the tabletop size Ti:sapphire/Nd:glass laser system that delivering energy of 150 mJ in 475 fs at the center wavelength of 1054 nm. The total energy in the pre-pulse and the main pulse was 150 mJ, which will make possible multi-hertz operation. To pursue the high repetition rate of the laser-driven TCE X-ray laser, we have designed a new 20 TW Ti:Sapphire laser system (600 mJ, 30 fs, 10 Hz). Special attention was paid to improve the contrast ratio, control of pulse shape as well as phase by an acoustic optic programmable dispersive filter (AOPDF) and 1 kHz preamplifier. Preliminary data have shown good laser characteristics. As the preliminary experiments, we have investigated high order harmonics generation from low-density laser plasma by using the solid target irradiated by a femtosecond laser pulse. The highest order was the 51st. harmonic at wavelength of 15.61 nm.

Keywords

High density plasmaHigh field physicsHigh order harmonics generationTCE longitudinally X-ray laserUltra-fast laser
Type
Research Article
Information
Laser and Particle Beams , Volume 23 , Issue 2 , June 2005 , pp. 183 - 186
Copyright
2005 Cambridge University Press

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Footnotes

This paper was presented at the 28th ECLIM conference in Rome, Italy.

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