1 May 1990 High-intensity, short pulse (1 ps), laser-plasma interaction at 1 um
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We present studies of high-intensity laser-plasma interactions using a 1-ps, 1.053-pm laser. It is currenily operated in a single-pulse mode with energies up to -100 mJ and focused intensities up to mid-1015 W/cm2. We have measured the absorption of laser light in plasmas produced during interactions with various moderate targets using an Ulbricht's sphere. Charge collectors were used to study the characteristics of the ion expansion. X-ray and XUV spectroscopy were used to measure the spectral emission from the plasmas. These results are compared to 1-D hydrodynamic code (LILAC) simulations. LILAC has been modified to improve its validity for short-pulse interactions but it is still found that the absorption is underestimated. Potential explanations, including suprathermal electron generation, are discussed.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David D. Meyerhofer, Hong Chen, Yung-Ho Chuang, J. A. Delettrez, R. Epstein, S. Uchida, and Barukh Yaakobi "High-intensity, short pulse (1 ps), laser-plasma interaction at 1 um", Proc. SPIE 1229, Femtosecond to Nanosecond High-Intensity Lasers and Applications, (1 May 1990); doi: 10.1117/12.18663; https://doi.org/10.1117/12.18663


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