this is not easy though...... y(]|jRo C5WCRg5& 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, )*A,L% 1 :Yt2] 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......... uTU4Fn\$L O|>1~^w For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, y^AA#kk ^)q2\YE; Thanks for your reply. Really like those words “guess”, “doubt”… u!uDu,y A&P1M6Of For your curiosity, have good luck! lk +K+Ra/ PEBFN MANG2004 IMGqJc,7