Theory of Cooperative Cascade Emission. I. Linear Stochastic Theory
Kensuke S. Ikeda, Jumpei Okada, Masahiro Matsuoka · Journal of the Physical Society of Japan · 1980
The time evolution of the cascade omission from an assembly of the three-level atoms excited by two-photon process is investigated under a linear approximation. The propagation effect and the stochastic nature of the quantum noise are fully taken into account. It is found that the time evolution of the emitted radiation shows different behaviors in the three time stages: In the earliest stage a negative feedback mechanism due to the two-photon coherence is important, and the emitted radiation exhibits a characteristic growing behavior peculiar to the cascade system; in the intermediate one this mechanism is destroyed by the dephasing, and a superradiant growth begins; and finally in the latest one this growth is suppressed by the dephasing of the active polarization, and a stationary radiation appears.