this is not easy though...... \~>#<@h ^S@b* 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, "#%T*c{Tf0 IN"qJ3<k 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......... tQ"PCm
y!j1xnzki For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, TX;|g1K y9 "!ys Thanks for your reply. Really like those words “guess”, “doubt”… ]GJskBm TAP/gN' For your curiosity, have good luck! U<t Qj` SRMy#j- MANG2004 ),86Y:^4