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Conferences > CLEO_SI > 2011 > CTuJ > CTuJ6

Origin of the Coherent Contrast Pedestal in Petawatt Laser Pulses

Chris Hooker, Yunxin Tang, Oleg Chekhlov, John Collier, Edwin Divall, Klaus Ertel, Steve Hawkes, and Paramel P Rajeev

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Abstract

We demonstrate experimentally that the “coherent” contrast pedestal in compressed pulses from CPA lasers originates from the diffraction gratings in the pulse stretcher. The pedestal intensity correlates with the level of scatter from the gratings.

© 2011 Optical Society of America

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