Consideringthetimedelayindifferenthohlraumwallpositionscausedbyobliqueincidence,thespatio-temporalopticalfielddistributioncharacteristicsofahohlraumwall,especiallyduringtherisingedgeofaflat-toppedpulse,issimulatedbyafastFouriertransformmethodtogetherwithchromatography.Resultsdemonstratethatbeampropagationalongthehohlraumwallisapush-broomprocesswithcomplexdynamicspatial–temporalevolution.Inthefirstfewpicoseconds,theopticalintensityofthefrontpositionincreasesrapidly,whilethatoftherearpositionisrelativelyweak.TheratioRoftheopticalintensityduringtherisingedgeissmallerthanthatofthesteadystate.Rgraduallyincreasesandfinallytendstothevalueofthesteadystatewithtime.Calculationalsoshowsthat,withshortertotalwidthoftherisingedge,Roftheopticalfielddecreasesandthedifferencecomparedtothesteadystatebecomeslarger.Theevolutionismoreseverewithsmallerangleofinclination.
