摘要
Theworkpresentedinthispaperisastudyofoutputtemporalcontrastdegradationbynear-fieldqualitydeterioration,suchasintensitymodulationandwavefrontdeviation,inalargeaperturehighpowershortpulselasersystem.AtwostepfocusingalgorithmwithacoordinatetransformbasedontheFresnelapproximationinthespacedomainisusedforsimulatingtheoutputfocusedbyanoff-axisparabolicmirror.Thetemporalcontrastdegradationbyintensitymodulationandwavefrontdeviationisanalyzedandtheinfluenceofthediameteronthetemporalcontrastdegradationisrevealed.ThesimulationandassumptionresultsbasedontheparametersoftheShenGuang-IIlasersystemarecomparedwiththeonlineexperimentaltemporalcontrastdata.Thenear-fieldqualitydeteriorationmightleadtotemporalcontrastdegradation,hinderinghighertemporalcontrastinlargeaperturehighpowershortpulselasersystems.
出版日期
2014年04月14日(中国期刊网平台首次上网日期,不代表论文的发表时间)