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双折射材料的温度修正 Birefringent Material Temperature Modification )Ke*JJaq Fx-8M! 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'Js} ^i:`ZfA# 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline 1V8-^ ()~pY!)1/ 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline K~@Mg1R iD<(b`S 3.Loop over the baseline material samples and determine the number of wavelength entries h;6lK$!c k0T?-iM 4.Loop over each sampled wavelength entry in the baseline material XC.%za8 V<Z[ nq a.Modify the ordinary and extraordinary refractive index values using (2) above M5xCC! =Zi2jL?On b.Apply the modified values to the non-baseline material [Q=dCX9% fk_o@
G!0 5.Set a description on the non-baseline material indicating the temperature change from baseline {&"N%;`Q eImn+_ N3 脚本编程及GUI例程请下载链接: [B+W%g(c- #dM9pc jh http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs y@\V+ jQ:OKh<Y http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd dd]/.Z ;qrB\j" E9~Ghx. QQ:2987619807 ,?L2wl[
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