Abstract

We present the design concept of a setup of a pulse shaper to be used for high-power femtosecond lasers. The pulse shaper is constructed from a high-damage threshold fused-silica spatial light modulator and a 4-f optical system based on the design concept to avoid optical damage. We have successfully demonstrated a pulse compression of 20fs, 5mJ pulses obtained from a 1kHz repetition rate Ti:sapphire chirped pulse amplification system at an average power of 5W.

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