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双折射材料的温度修正 Birefringent Material Temperature Modification \\w<.\Yh u7 s- 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: ~jcdnm] Sep/N"7~t 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline gEr@L
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>b 1 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline ;ED` 7 _{$eOwB 3.Loop over the baseline material samples and determine the number of wavelength entries b ]A9$- hO8~Rg
4.Loop over each sampled wavelength entry in the baseline material 'Lm\ r+$F O^/z7, a.Modify the ordinary and extraordinary refractive index values using (2) above C8dC_9 g~ubivl2 b.Apply the modified values to the non-baseline material ;5S'?fj Klr+\R@(n 5.Set a description on the non-baseline material indicating the temperature change from baseline i`k{}!F #Y|t,x; 脚本编程及GUI例程请下载链接: -d'swx2aZ! _=Y?' gHH http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs ::<v; `l 6l Suzu http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd Ht`kmk;I)
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