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双折射材料的温度修正 Birefringent Material Temperature Modification '~=SzO YIYmiv5 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:
_w+Qy. yY q,*<G 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline L4nYXW0y @K-">f 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline vr=#3> oCz/HQoBk 3.Loop over the baseline material samples and determine the number of wavelength entries $=4QO /%^#8<=|U 4.Loop over each sampled wavelength entry in the baseline material /j.9$H'y Y}wyw8g/ a.Modify the ordinary and extraordinary refractive index values using (2) above |yPu!pfl \'O"~W b.Apply the modified values to the non-baseline material 0</);g} LKDO2N 5.Set a description on the non-baseline material indicating the temperature change from baseline 6D3B^.rj] CpTjJXb 脚本编程及GUI例程请下载链接: 3!_XEN[ c-sfg>0 ^ http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs ^U/O!GK ]7A'7p$Y http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd wUJcmM;
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