Hydrodynamic evolution of picosecond laser plasmas

Otto L. Landen; Brian-Tinh Vu; Daniel Gorman Stearns; W. Edward Alley

doi:10.1117/12.46144

1 June 1991 Hydrodynamic evolution of picosecond laser plasmas

Otto L. Landen, Brian-Tinh Vu, Daniel Gorman Stearns, W. Edward Alley

Proceedings Volume 1413, Short-Pulse High-Intensity Lasers and Applications; (1991) https://doi.org/10.1117/12.46144
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

The density profile evolution of picosecond laser-plasmas has been inferred from the angular dependence of the specular reflectivity of a probe picosecond pulse. Time-resolved density profiles, critical density scale-lengths as short as 3 nm and values for the plasma collisionality are presented for a gold target irradiated by a 580 nm, 0.8 ps FWHM laser pulse with a peak intensity of up to 2x10¹³ Wcm^-2. The results are best fitted at early times (<10 ps) by the self-similar isothermal exponential density profile and a critical density collision frequency of 0.3ω, in good agreement with 1-D hydrodynamic simulations.

Citation Download Citation

Otto L. Landen, Brian-Tinh Vu, Daniel Gorman Stearns, and W. Edward Alley "Hydrodynamic evolution of picosecond laser plasmas", Proc. SPIE 1413, Short-Pulse High-Intensity Lasers and Applications, (1 June 1991); https://doi.org/10.1117/12.46144

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