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双折射材料的温度修正 Birefringent Material Temperature Modification 3\jcq@N HQOz 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: %+,7=Wt- B Ctm05 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline \P` mV9P +`)4jx)r/ 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline )Cm7v@B
,m-/R 3.Loop over the baseline material samples and determine the number of wavelength entries !?~>f>js_l ] oh.w 4.Loop over each sampled wavelength entry in the baseline material PLmf.hD \ )+ss)LEC a.Modify the ordinary and extraordinary refractive index values using (2) above lZa L=HS#L 5,<:|/r b.Apply the modified values to the non-baseline material M)1?$'Aq $WV N4fg 5.Set a description on the non-baseline material indicating the temperature change from baseline fq2t^c|$ zz1e)W/ 脚本编程及GUI例程请下载链接: aA5rvP+ Fl'+ C http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs MSw:Ay[9 If*t$f>y4N http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd jg_##Oha
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