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双折射材料的温度修正 Birefringent Material Temperature Modification u\a#{G;Z XFg9P}" 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: "_P;2N6 AJt+p&I[J 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline }I2wjO w}L]X1#sF 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline md=TjMaY 1}S S+>` 3.Loop over the baseline material samples and determine the number of wavelength entries ycc4W*] 9K.Vb1& 4.Loop over each sampled wavelength entry in the baseline material :1 ^LsLr5 5]~'_V a.Modify the ordinary and extraordinary refractive index values using (2) above uyO/55;HO B{/R: Hm b.Apply the modified values to the non-baseline material >~#yu&*D Ha(c'\T(\ 5.Set a description on the non-baseline material indicating the temperature change from baseline ,NOsFO-`< dW)B1iUo! 脚本编程及GUI例程请下载链接: yUeCc"Vf 5c9^-|-T http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs %}[i'rT> ]99|KQ<s http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd l~1Oef#y d+<G1w& |