this is not easy though...... kumV|$Y?kA <;Hb7p3N I guess you need to give a try as sigma indicates the projected width of 1/e squared value of the peak irrdiance in direction cosine space...... for a normally incidence it should be around ~ cosine 85. Good luck !
Hi MANG2004, sLA.bp.O \$_02:# I am curious about your calculation, too. Plus, the definition of σ refers to 1/e^2 width not the FWHM. Even your calculation/defintion is correct. I have a doubt that it will work when the specualr incident ray angle is not normal......... ^# $IoW pX_ For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, OH>.N"IG =wX;OK|U(^ Thanks for your reply. Really like those words “guess”, “doubt”… %$ya>0?mq 1e[?}q]* For your curiosity, have good luck! d`=
~8` eA1g}ipm MANG2004 Qp<*or@