Nondegenerate three-level laser with parametric amplifier driven by coherent light in vacuum reservoir

Abstract

In this research we have studied the squeezing and statistical properties of the cavity light produced by a coherently driven nondegenerate three-level laser with an open cavity and coupled to a two-mode vacuum reservoir via a single-port mirror. We have carried out our analysis by putting the noise operators associated with the vacuum reservoir in normal order. Applying the steady state solutions of the stochastic differential equations of the atomic operators along with the quantum Langavin equations for the cavity mode operators, we have calculated the mean, variance of the photon number, photon number correlations, intensity difference fluctuations, the quadrature squeezing, and entanglement for the two-mode cavity light. We have found that the mean photon number of two mode is the sum of the mean photon number of mode a and b and the photon number variance of two mode is the square of mean photon number of two-mode. We have seen that the maximum quadrature squeezing is found to be 62.19%. Moreover, the presence of parametric amplifier enhances the quadrature squeezing.