|
|
雙折射材料的溫度修正 Birefringent Material Temperature Modification Lnnl++8Y !J w 目前，FRED尚不支持“global”溫度設(shè)置，溫度敏感性評(píng)估一般用腳本編程來(lái)完成，該文檔演示雙折射材料的折射率隨溫度變化的問(wèn)題。附件案例文件包括兩個(gè)雙折射材料模，“KDP”和 “KDP Baseline”， KDP Baseline材料存儲(chǔ)在已知溫度下的折射率，KDP材料用于儲(chǔ)存在“current”溫度下的折射率值，定義為與baseline material之間的溫度差。一個(gè)嵌入的腳本名為“modifyBirefringentMaterialIndex” ，包含在FRED文件中，另外也單獨(dú)附加。其實(shí)現(xiàn)過(guò)程如下： AAkdwo ,>n 4
` A 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline ip4:px- >+=)Q,|R 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline R/M:~h~F! w8* +l0 3.Loop over the baseline material samples and determine the number of wavelength entries +d6/*}ht
AA9OElCa
4.Loop over each sampled wavelength entry in the baseline material Ud0%O UK2Y<\vD a.Modify the ordinary and extraordinary refractive index values using (2) above Rx*T7*xg{ *Wv]DV=\ b.Apply the modified values to the non-baseline material >De\2gbJ t$8f:*6(* 5.Set a description on the non-baseline material indicating the temperature change from baseline 1sZwW P
|
