this is not easy though...... bZ1*:k2 G^tazAEfo 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, o S= !6h pH mqwB~| 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......... Nd]F 33|X 4/|x^Ky>G For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, !DzeJWM| %Y%r2 Thanks for your reply. Really like those words “guess”, “doubt”… =X?fA, iq*im$9J For your curiosity, have good luck! L4Zt4Yuw I{OizBom MANG2004 ~*7$aj