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双折射材料的温度修正 Birefringent Material Temperature Modification e}VBRvr kU-t7'?4 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： ,vqr <H9e + 1IQYa| 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline YKbCdLQ '\fY <Q:! 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline W>(/ bX I]"96'|N 3.Loop over the baseline material samples and determine the number of wavelength entries 9z;HsU v -V"22sR] 4.Loop over each sampled wavelength entry in the baseline material '1fNBH2 t%zpNd2lk a.Modify the ordinary and extraordinary refractive index values using (2) above _sE#)@p O|A_PyW b.Apply the modified values to the non-baseline material ]9=h%5Ji> LW sP ya 5.Set a description on the non-baseline material indicating the temperature change from baseline $P7iRM ] plu$h-$d 脚本编程及GUI例程请下载链接： m\>a,oZH G!8 Z~CPF  http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs o~FRF0f*VP -5>-%13 http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd ' /Bidb?
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