THE POPULATION OF TWO-LEVEL ATOM IN THE FREOUENCY MODULATED LIGHT FILEDJun WenPublished Jan 1, 2000• 0 citationsOpenAlexAbstractIn this essay,The population of two-level atom system in the frequencey modulated light filed was analysed.To realize the population trapping in the two-level system,It must add the frequencey modulation and assure the adiabatic condition.