The calculations I did, (and it was quite a number of years ago=I simply summarized the result here), shows an energy conservation in x-y geometry where you have a product rule # I(x,y)=I_o i(x) i(y) # with a rectangular or square aperture. Very precise energy conservation could be shown in both cylindrical and x-y geometry. So which is it ?My argument is meant to show the conservation of energy in a qualitative sense and also to show that the peak intensity is proportional to the square of the area of the aperture. The main thing is that you start with diameter and move to area and lose a factor pi along the way. Meanwhile, the focused spot area Af=(
1 Comment
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |