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双折射材料的温度修正 Birefringent Material Temperature Modification (+.R8 . L]!* 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: bP1]:^ x@W M~djX} #\ 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline 9y*pn|A[F Ft 2u&Rtx 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline 6z1>(Za7> I~>Ye<g# 3.Loop over the baseline material samples and determine the number of wavelength entries 0t0m?rVW Si=u=FI1e 4.Loop over each sampled wavelength entry in the baseline material fTV3lyk FrQRHbp3 a.Modify the ordinary and extraordinary refractive index values using (2) above
}&/_ S $McbVn)~f b.Apply the modified values to the non-baseline material LVNJlRK ^}<h_T?<_- 5.Set a description on the non-baseline material indicating the temperature change from baseline %g=SkQ&d ),U>AiF] 脚本编程及GUI例程请下载链接: cy( WD#^ Mzj|57:gx http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs +Am\jsq Aw7_diK^ http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd oGqbk x /\UFJ 2!g7F`/B QQ:2987619807 kTS#>uS
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