this is not easy though...... ^Idle*+ ] Eh}L 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, 'FYJMIs {8I. `U 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......... vp.ZK[/` pa{re,O"e For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, @}:uu$OH 4WB-Ec Thanks for your reply. Really like those words “guess”, “doubt”… TB;o~>9U +\r+n~w For your curiosity, have good luck! 5K?}}Frrt` ce6__f5? MANG2004 \8uIER5)