The temporal contrast requirements for high-power laser pulses have become increasingly stringent with rising irradiance levels.Over the past decade,in addition to discrete pre-pulses,spatiotemporal pulse pedestals ha...The temporal contrast requirements for high-power laser pulses have become increasingly stringent with rising irradiance levels.Over the past decade,in addition to discrete pre-pulses,spatiotemporal pulse pedestals have attracted significant attention as a major limiting factor for contrast quality in chirped-pulse amplification systems,primarily caused by imperfections in their stretching and compression optics.In this work,we present the first direct high-resolution singleshot measurement of these contributions in the spatiotemporal domain using an imaging spectrometer in combination with a two-dimensional self-referenced spectral interferometer.展开更多
文摘The temporal contrast requirements for high-power laser pulses have become increasingly stringent with rising irradiance levels.Over the past decade,in addition to discrete pre-pulses,spatiotemporal pulse pedestals have attracted significant attention as a major limiting factor for contrast quality in chirped-pulse amplification systems,primarily caused by imperfections in their stretching and compression optics.In this work,we present the first direct high-resolution singleshot measurement of these contributions in the spatiotemporal domain using an imaging spectrometer in combination with a two-dimensional self-referenced spectral interferometer.
