Abstract

We demonstrate what we believe to be the highest-contrast (1011), multiterawatt, chirped-pulse amplification (CPA) Ti:sapphire laser by applying the modified cross-polarized-wave (XPW) generation method. This method produces a contrast improvement of 3 orders of magnitude using microjoule input energy. Microjoule energy can be achieved by direct amplification without the complications of a double CPA system. The 1011 contrast is sufficient for experiments on high-damage-threshold solid targets with focused intensities up to 1022โ€‰Wโˆ•cm2.

© 2006 Optical Society of America

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