Generation of picosecond CuK x-ray pulses and application to time-resolved x-ray diffraction
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This paper reports the results on the generation of CuK x-ray pulse shorter than 10 ps by driving an x-ray diode with 1.5 ps, 193 nm laser pulses at repetition rate of 300 Hz. A cw modelocked Nd:YLF laser is employed as the master oscillator to seed a regenerative amplifier and pump a dye laser. By mixing the fourth harmonic of Nd:YLF radiation with the dye laser output, picosecond seed pulses at 193 nm are produced. The seed pulses are amplified by an ArF excimer module to energy of 0.5 mJ, duration 1.5 ps and 300 Hz repetition rate.