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双折射材料的温度修正 Birefringent Material Temperature Modification Ak3V< =g x crgVedx~} 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： #TB
3|= Q4g69IE 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline FB3}M)G> M MaF4lFmS 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline :8]y*j R\x3'([A5 3.Loop over the baseline material samples and determine the number of wavelength entries 7IrH(~Fo I`x[1%y2 F 4.Loop over each sampled wavelength entry in the baseline material IUD@Kf]S `1lGAKv a.Modify the ordinary and extraordinary refractive index values using (2) above s dN1BV2 n-O QCz9Xl b.Apply the modified values to the non-baseline material Q n;,OB k eEY z A 5.Set a description on the non-baseline material indicating the temperature change from baseline VWk{?*Dp %kP=VUXj 脚本编程及GUI例程请下载链接： g#G ]}8C &@w0c>Y  http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs s'BlFB n k/) h @K8@ http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd h:KEhj\d?
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