this is not easy though...... Bj~+WwD)QR m4g$N) I guess you need to give a try as sigma indicates the projected width of 1/e squared value of the peak irrdiance in direction cosine space...... for a normally incidence it should be around ~ cosine 85. Good luck !
Hi MANG2004, 9mFE?J B]$GSEB 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......... &M'*6A YF:L)0H'O For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, ~= -RK$= w-{c.x Thanks for your reply. Really like those words “guess”, “doubt”… p^u:&Quac 6 _ow%Rx~F For your curiosity, have good luck! !L8#@BjU |a%Tp3Q~ MANG2004 e,5C8Q`Z