Initial mean cavity photons and driving field effects on the non-classical features of cavity field from a three-level laser

We analyze the mean intensity and quadrature squeezing of the cavity photons obtained from a three-level laser with input coherent and squeezed fields employing the solution of the quantum Langevin equation. Despite the fact that the input coherent field has a substantial effect on the mean intensity, it does not affect the squeezing of the cavity photons. On the other hand, the input squeezed field improves the mean intensity and the amount of squeezing of the cavity photons. Moreover, the initial mean cavity photons enhance the mean intensity and lower the amount of squeezing of the cavity photons.