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双折射材料的温度修正 Birefringent Material Temperature Modification n*xNMw1x"T Gsh2 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: U)o8Tr f3h9CV 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline 6%xl}z]o Z,&ywMm/G 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline |3cR'|<Ual 6u7HO-aa 3.Loop over the baseline material samples and determine the number of wavelength entries tw')2UGg Yb\36| 4.Loop over each sampled wavelength entry in the baseline material U5PCj ]-Xt 0\o'd\ a.Modify the ordinary and extraordinary refractive index values using (2) above LMDa68 s Q'Tn+}B& b.Apply the modified values to the non-baseline material xMh&C{q t8[:}[Jx 5.Set a description on the non-baseline material indicating the temperature change from baseline A|+{x4s` 3WVHI$A9 脚本编程及GUI例程请下载链接: hv)($; +$'/!vN http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs }bTMeCgI C!P6Z10+j http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd Mf63 59
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