Squeezed light from a coherently pumped four-level laser
Timothy C. Ralph, Craig M. Savage · Physical Review A · 1991
We calculate the amplitude squeezing in the output of a coherently pumped four-level laser and compare it with that from a similar incoherently pumped laser. We find that squeezing may be considerably enhanced by pumping with coherent light. The squeezing in both types of laser is explained by a simple statistical model.