光学衍射,干涉等.pdf

1 2 3 2013/6/3 1 2013/6/3 2 (Huygens’ principle) C. Huygens (1629—1695) v 2013/6/3 3 2013/6/3 4 i ABC 1 C→C′ Δt = CC v 1 C′AC′A′ A′B′C′ A v r = v ⋅Δt = 2 CC A 2 v 1 AA′B B′ o i : 2 CC sin i = 1 AC sin i1 v1 = = const r v CC sin i2 v2 A 2 sin i = = 2 AC v1 AC 2013/6/3 5 sin i n sin i v 1 2 1 1