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双折射材料的温度修正 Birefringent Material Temperature Modification 'J&$L c Gt^Fj&^ 目前,FRED尚不支持“global”温度设置,温度敏感性评估一般用脚本编程来完成,该文档演示双折射材料的折射率随温度变化的问题。附件案例文件包括两个双折射材料模,“KDP”和 “KDP Baseline”, KDP Baseline材料存储在已知温度下的折射率,KDP材料用于储存在“current”温度下的折射率值,定义为与baseline material之间的温度差。一个嵌入的脚本名为“modifyBirefringentMaterialIndex” ,包含在FRED文件中,另外也单独附加。其实现过程如下: 4c*?9r@ q}#4bB9 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline fE;<)tU
;V~[kF=t0 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline 4~3 N;]X Mg0[PbS 3.Loop over the baseline material samples and determine the number of wavelength entries E1'HdOh&z O!(M:. 4.Loop over each sampled wavelength entry in the baseline material B#_<? E}d@0C: a.Modify the ordinary and extraordinary refractive index values using (2) above |T}Q~ tN=B9bm3j b.Apply the modified values to the non-baseline material 9""e*-;Mi *1fq :-- 5.Set a description on the non-baseline material indicating the temperature change from baseline W4Ey]y" C$~2FTx 脚本编程及GUI例程请下载链接: s=&&gC1 %(IkUD http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs %OeA"# E
{$Jk]c http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd l.c*,9
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