Figure 7From: Coherently driven degenerate three-level laser with parametric amplifierThe normally-ordered variance of the photon number. Plots of the normally-ordered variance of the photon number [Eq. (84)] versus η for ε = 3.5, μ = 5, A = 100, κ = 0.8, and β = 0.2 (solid curve) and β = 0.3 (dotted curve).Back to article page