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双折射材料的温度修正 Birefringent Material Temperature Modification U!/nD~A L"iyjL<M 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: fmJW d| t^,Qy.L0 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline dz|*n'd $ rYS 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline xLI{=sL ;8iL,^.A 3.Loop over the baseline material samples and determine the number of wavelength entries F2$bUY yXA f 4.Loop over each sampled wavelength entry in the baseline material CS\tCw\Y yCIgxPv|7 a.Modify the ordinary and extraordinary refractive index values using (2) above Jyci}CU3\Q A_Iu*pz^^ b.Apply the modified values to the non-baseline material 5%+}rSn7 3Jm'q,TC 5.Set a description on the non-baseline material indicating the temperature change from baseline 'd^gRH<z .w_`d'} 脚本编程及GUI例程请下载链接: P\4tK<P| 5ek%d http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs '$XHRS/q] Bh,)5E^m http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd 4E-A@FR
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