li yong, hong wei, zhu bin, et al. Optical spectra from interaction between ultrashort ultraintense laser and foil targets[J]. High Power Laser and Particle Beams, 2011, 23.
Citation:
li yong, hong wei, zhu bin, et al. Optical spectra from interaction between ultrashort ultraintense laser and foil targets[J]. High Power Laser and Particle Beams, 2011, 23.
li yong, hong wei, zhu bin, et al. Optical spectra from interaction between ultrashort ultraintense laser and foil targets[J]. High Power Laser and Particle Beams, 2011, 23.
Citation:
li yong, hong wei, zhu bin, et al. Optical spectra from interaction between ultrashort ultraintense laser and foil targets[J]. High Power Laser and Particle Beams, 2011, 23.
Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China;
2.
Key Laboratory of Basic Plasma Physics,Chinese Academy of Sciences,Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China
The optical spectra from the interaction between a 30 fs, 1×1019 W/cm2 laser pulse and foil targets on SILEX-Ⅰ are studied. Evident red shifts of the second and three-half harmonic emissions in the specular reflection direction are observed from a 3 μm thick copper target. The recession velocity at the reflection surface is deduced to be 2.6×108 cm/s. For the 200 nm thick CH target, a supercontinuum extending from 300 to 940 nm is observed in the direction of laser propagation. The density distribution of plasmas induced by laser prepulse is simulated using MULTI-1D hydrodynamic code. The results show that, laser prepulse has a profound effect on the pre-plasma density distribution of a foil target, which leads to the differences in the observed spectra.
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