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双折射材料的温度修正 Birefringent Material Temperature Modification ;7m>40W #G*z{BRQ 目前,FRED尚不支持“global”温度设置,温度敏感性评估一般用脚本编程来完成,该文档演示双折射材料的折射率随温度变化的问题。附件案例文件包括两个双折射材料模,“KDP”和 “KDP Baseline”, KDP Baseline材料存储在已知温度下的折射率,KDP材料用于储存在“current”温度下的折射率值,定义为与baseline material之间的温度差。一个嵌入的脚本名为“modifyBirefringentMaterialIndex” ,包含在FRED文件中,另外也单独附加。其实现过程如下: "sg$[)I3n ).ugMuk 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline 0.@/I}R[ =_ rn8 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline K]
Eq"3 >Y2Rr9 3.Loop over the baseline material samples and determine the number of wavelength entries kN}.[enI~ gpw(j0/Fs 4.Loop over each sampled wavelength entry in the baseline material \!S C; @L0wd> a.Modify the ordinary and extraordinary refractive index values using (2) above 4yBe(&N-d Szg<;._J b.Apply the modified values to the non-baseline material W1:o2 C7 :m37Fpz&b 5.Set a description on the non-baseline material indicating the temperature change from baseline QGshc wV-cpJ,} 脚本编程及GUI例程请下载链接: a#raUF7e Np/[MC http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs 5T dUe"qH29s http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd U3za}3
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