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双折射材料的温度修正 Birefringent Material Temperature Modification /6x&%G:m# 144Y. 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: x|H`%Z ^T=9j.e'ja 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline 3I)~;>meo IH|zNg{\Y 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline pUIN`ya[[ ,jU>V]YC 3.Loop over the baseline material samples and determine the number of wavelength entries |v&)O)Jg 1w,_D.1' 4.Loop over each sampled wavelength entry in the baseline material ]so/AdT9hA %~rEJB@{ a.Modify the ordinary and extraordinary refractive index values using (2) above oD)x\ )t8 byHc0ktI\ b.Apply the modified values to the non-baseline material v{u3[c
19 5_1?'< 5.Set a description on the non-baseline material indicating the temperature change from baseline ^e:z ul{;] Cbbdq%ySI 脚本编程及GUI例程请下载链接: Mz@{_*2 ,Py\Cp=Dw http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs H2X_WSwm 'L /)9.29 http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd _3/u#'m0
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