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双折射材料的温度修正 Birefringent Material Temperature Modification |zq4* 5 ahA{B1M)n 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: ;hwzYXWF ^ Hg/P8q 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline 7R,qDp S T7{<arL$ 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline 9JPEj-3`g n#BvW,6J 3.Loop over the baseline material samples and determine the number of wavelength entries j$Nf%V 6Y %zzYleJ!] 4.Loop over each sampled wavelength entry in the baseline material %:3'4;jh% %ISq>A)% a.Modify the ordinary and extraordinary refractive index values using (2) above xYI;V7 d ;^ b.Apply the modified values to the non-baseline material bKMWWJf*' RNTa XR+Zn 5.Set a description on the non-baseline material indicating the temperature change from baseline wK ?@.l)u ?`"n3!>bS 脚本编程及GUI例程请下载链接: #{$1z;i?f *YtB )6j http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs CvK3H\.&;k w2{g,A| http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd r<c #nD~K
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