this is not easy though...... EzzzH(!j YN"102CK 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, %z8@; >fs-_>1d 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......... CdTmL{Y1 \mWXr*; For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, 0SvPyf%AC ?ADk`ts~,} Thanks for your reply. Really like those words “guess”, “doubt”… -cq ~\m^6 b'vJPv~hI For your curiosity, have good luck! YhR?*Di |W:kzTT-T MANG2004 Im6ymaf9