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双折射材料的温度修正 Birefringent Material Temperature Modification (PGmA>BT Qpd-uC_Ni 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%6bk. j5z, l 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline nR/; uTTz D,xWc|V 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline Z{#^lhHx iMx+y5O 3.Loop over the baseline material samples and determine the number of wavelength entries .Q"3[ y- k?_$M 4.Loop over each sampled wavelength entry in the baseline material 4 E3@O QOuy(GY
a.Modify the ordinary and extraordinary refractive index values using (2) above GQqw(2Ub} 1E$Z]5C9 b.Apply the modified values to the non-baseline material /6{`6(p 3FUZTX]Q1 5.Set a description on the non-baseline material indicating the temperature change from baseline f<SSg*A; {N5g52MN 脚本编程及GUI例程请下载链接: Z.6`O1OY}? 7i{Rn K6* http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs d!8q+FI z+" :,# http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd _if&a'
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