Greater than five-order-of-magnitude post-compression temporal contrast improvement with an ionization plasma grating
arxiv(2024)
摘要
High-intensity lasers require suppression of prepulses and other non-ideal
temporal structure to avoid target disruption before the arrival of the main
pulse. To address this, we demonstrate that ionization gratings act as a
controllable optical switch for high-power light with a temporal contrast
improvement of at least 3×10^5 and a switching time less than 500 fs. We
also show that a grating system can run for hours at 10 Hz without degradation.
The contrast improvement from an ionization grating compares favorably to that
achievable with plasma mirrors.
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