Xj. Fan et al., Time evolution of atomic response and light amplification mechanism in an open inversionless lasing system, ACT PHY C E, 49(9), 2000, pp. 1719-1725
We study the law of time evolution of atomic response in an open h-type inv
ersionless lasing system,elucidate the light amplification mechanism withou
t inversion,and find that the character of the time evolution of atomic res
ponse in an open system is obviously different from that in a corresponding
closed system. We consider that the variation of the oscillation frequency
and anharmonic oscillation in the process of time evolution originate from
the stochastic coherence property of atom oscillators in the system.