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双折射材料的温度修正 Birefringent Material Temperature Modification b{)('C$ x( w <U1 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: :b>Z|7g ? tYIHsm\b 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline _yjM_ALjo (Br$(XJoK} 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline nzy =0Ox[ Lhl)p P17 3.Loop over the baseline material samples and determine the number of wavelength entries j5z, l HY#7Ctn3 4.Loop over each sampled wavelength entry in the baseline material ,r5<v_ 1W~-C B> a.Modify the ordinary and extraordinary refractive index values using (2) above +C;ZO6%w fEs957$ b.Apply the modified values to the non-baseline material 5!#"8|oY u#p1W|\4 5.Set a description on the non-baseline material indicating the temperature change from baseline !~UI~-i' 4W9!_:j(j 脚本编程及GUI例程请下载链接: 1E$Z]5C9 /6{`6(p http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs X2@mQ&n 9?D7"P+ http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd {N5g52MN Z.6`O1OY}? 7i{Rn K6* QQ:2987619807 d!8q+FI
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