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双折射材料的温度修正 Birefringent Material Temperature Modification !G=>ve <O857j 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: ^)\+l%M iQ`]ms+ 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline #1Z7R/ VQ
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2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline !sIwFv) o42`z>~ 3.Loop over the baseline material samples and determine the number of wavelength entries +g\;bLT OeTu?d&N 4.Loop over each sampled wavelength entry in the baseline material h
W.2p+ `^8*<+ a.Modify the ordinary and extraordinary refractive index values using (2) above VWvoQf^+ ^Vo"fI`=C b.Apply the modified values to the non-baseline material yFeeG3n3 d/j@_3' 5.Set a description on the non-baseline material indicating the temperature change from baseline q.oLmX y lL8+7W 脚本编程及GUI例程请下载链接: h`?k.{})M E <@\>y.[ http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs v}`1)BUeF oX|?:MS: http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd <'*4j\*
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