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双折射材料的温度修正 Birefringent Material Temperature Modification Ha\q}~_ "b!QE2bRO 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: O\T cf|<~7 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline kQ$Q}3f VX<ZB +R 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline rSD!u0c[ d{f3R8~Q. 3.Loop over the baseline material samples and determine the number of wavelength entries Es kh=xA { %T UljX K} 4.Loop over each sampled wavelength entry in the baseline material A`7uw|uO$ Z3G>DF:$ a.Modify the ordinary and extraordinary refractive index values using (2) above 'A,&9E{%1 sa`7_KB b.Apply the modified values to the non-baseline material }`$:3mb&f _1c'~; 5.Set a description on the non-baseline material indicating the temperature change from baseline !b*lL#s,Y \K)"@gdW 脚本编程及GUI例程请下载链接: Y]b5qguK Hi{c[; http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs aI|<t^X }(-R`.e; http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd ";j/k9DE
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