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双折射材料的温度修正 Birefringent Material Temperature Modification NetYg]8` 'TL2%T/)t 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: 3)3Hck
BWh}^3?l 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline D|l,08n"? uMvb-8 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline r$ =qQ7^# I.1D*!tz 3.Loop over the baseline material samples and determine the number of wavelength entries !siWEzw /%!~x[BeJ> 4.Loop over each sampled wavelength entry in the baseline material iwU[6A eX"''PA a.Modify the ordinary and extraordinary refractive index values using (2) above qy
,"X)^#
dy<27 = b.Apply the modified values to the non-baseline material {pWBwf>R C Fi4UaJ3K 5.Set a description on the non-baseline material indicating the temperature change from baseline )s)_XL %m eLW& 脚本编程及GUI例程请下载链接: wO7t!35 x0A7O http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs 9#qeFBI &+01+-1hW http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd $
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