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双折射材料的温度修正 Birefringent Material Temperature Modification l| WdJn
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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： T!![7Rs 7 'T3W c 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline ['~E _z 6-"@j@l5< 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline ..FEyf JATW'HWC|I 3.Loop over the baseline material samples and determine the number of wavelength entries Ep>} S W4MU^``
4.Loop over each sampled wavelength entry in the baseline material }57s +pcGxje\ a.Modify the ordinary and extraordinary refractive index values using (2) above g=G>4Ua3 SX/ E@vYb b.Apply the modified values to the non-baseline material R y47Fze 4F[4H\>' 5.Set a description on the non-baseline material indicating the temperature change from baseline G_ -8*. <b
JF&, 脚本编程及GUI例程请下载链接： ]1Wh3C pW[KC!  http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs -BV8,1 0H9UM *O http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd != uaB.
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