Comparison between measured and calculated nonuniformities of Nike laser beams smoothed by induced spatial incoherence

被引:29
作者
Deniz, AV
Lehecka, T
Lehmberg, RH
Obenschain, SP
机构
[1] Sci Applicat Int Corp, Mclean, VA 22102 USA
[2] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA
关键词
D O I
10.1016/S0030-4018(97)00515-4
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We have studied the spatial fluence nonuniformities in single beams from the Nike KrF laser smoothed by the Induced Spatial Incoherence (ISI) technique. This study compares time-integrated CCD camera measurements with a numerical model of ISI speckle used in the NRL FAST2D hydrocode, and with analytic calculations that examine the ensemble-ever age behavior of that model. The results verify the model and calculations, showing good agreement of both the spatial mode spectra and the total nonuniformity versus pulsewidth and bandwidth. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:402 / 410
页数:9
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