Abstract

A chirped pulse amplification laser with zigzag slab Nd:glass amplifiers dedicated to x-ray laser research is described. The laser provides a 1.6 ps duration pulse with 7  J energy at a repetition rate of 0.1Hz. In the power amplifier system, laser light is amplified in a two-step manner: The first step is image-relayed multipass amplification up to 1  J with a 10mm×10mm beam. The second step is double-pass amplification up to >10  J with a 10mm×90mm beam. By using this laser system, the saturated amplification of the Ni-like Ag laser at a wavelength of 13.9nm has been successfully demonstrated.

© 2007 Optical Society of America

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