Abstract
We present the development of a laser system capable of generating bandwidths sufficient to support a sub 30 fs pulse at 910 nm. These pulses have been amplified to 500 mJ of energy at 2 Hz in two stages. The contrast measurements show that the initial seed is clean and suggests that the close in contrast is limited by the evaluation stretcher and compressor. Such a system is suitable for seeding high energy high power OPCPA systems based on KD*P.
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