Abstract

We present the current development of an injector for a high-contrast, ultrashort laser system devoted to relativistic laser-plasma interactions at kHz repetition rate [1]. The front-end is based on a 1 kHz, CEP-stabilized Ti:Sa CPA, delivering 1.4 mJ, 28 fs pulses,followed by a cross-polarized wave (XPW) filter for temporal cleaning and shortening. This filter is an optimized version of the waveguided XPW device described in [2]. 300 µJ pulses are routinely generated, corresponding to a XPW internal efficiency as high as 33% and a global energy transmission of 22%.

© 2013 IEEE

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