A sketch of the steady-state photon number |c_s|² against the normalized cavity field detuning Δ_c/κ for the cases (a) g₀/2π = (10, 12, 14, 16) kHz; (b) g_c/2π = (100, 150, 200, 250) kHz. (c) The steady state mean intra-cavity photon numbers |c_s|² against the normalized atomic detuning Δ_a/ω₁ for different values of atom field coupling g=gaN . (d) The steady state mean photon number |c_s|² against the dimensionless detuning Δ_c/κ for four different frequencies of NMR₁. The remaining parameters are the same as used in Fig. 9.