§5-4矩孔和单缝的夫琅和费衍射 菲涅耳一基尔霍夫衍射公式: EIP A rr exp(ikl)exp(ikr) coS n, r|-coS n do cElo)exp(ikr kodo Aexp(ikl) coS n coS n K()§5－4矩孔和单缝的夫琅和费衍射 ◼ 一、菲涅耳－基尔霍夫衍射公式： ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )                         = = =  =                          = → → → → → → → →   2 cos n, r - cos n, l , K l ~ Aexp ikl , i 1 K d r ~ exp ikr d 2 cos n, r - cos n, l r exp ikr l exp ikl i A P ~       c E c E Q E