周期微扰 H'(t)=AcoS(at +o) iot iOt i(a+omk)t iCOmk - ot +f "i(+O k icomp max innum 0=O mk 2 8.+ha. absorption mk, 8 k 力a, en ission周期微扰 emission absorption imum i e F i e H F Fe F e H t A t m k m k m k m k m k i t m k m k i t m k m k i t i t m k m k , , , , max ( ) 1 * ( ) 1 ' ˆ ˆ cos( ) ˆ '( ) ( ) ( )                         = − = − = = + − − + + − = = + = + + − + −