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The plasma density gratings have been proposed to manipulate high power ultrashort laser pulses, such as speed reduction, pulse stretching and compression. 首次提出了用等离子体密度光栅来对高功率超短脉冲激光进行速度减慢，脉冲展宽和压缩等操纵的理论，并通过数值模拟得以证实。