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New method for better laser-material interaction

from Lawrence Livermore National Laboratory

Using ultrashort laser pulses lasting a few picoseconds (trillionths of a second), Lawrence Livermore National Laboratory researchers have discovered an efficient mechanism for laser ablation (material removal) that could help pave the way to the use of lower-energy, less costly lasers in many industrial laser processing applications. The new method, reported in a Journal of Applied Physics paper published online, uses short-wavelength, high-fluence (energy per unit area) laser pulses to drive shock waves that melt the target material. more

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