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双折射材料的温度修正 Birefringent Material Temperature Modification Gj-nTN Z:7eroZP 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: 'UWkJ2:! 4F
G0'J&hw 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline vVw@^7U M1xsGa9h& 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline tx>7?e8E K&`1{, 3.Loop over the baseline material samples and determine the number of wavelength entries ^ex\S8j m<-!~ ew 4.Loop over each sampled wavelength entry in the baseline material $8UW^#Bpq QJ4$) Fr( a.Modify the ordinary and extraordinary refractive index values using (2) above ?@,EGY< 6{]F#ig= b.Apply the modified values to the non-baseline material HrvyI)4{ (~zu4^9w 5.Set a description on the non-baseline material indicating the temperature change from baseline rf%lhBv >h;]rMD!| 脚本编程及GUI例程请下载链接: `s T;\ -'d:~:1f http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs ./k7""4 q0VAkVHw4 http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd r5S/lp+Y+N
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