Intensity correlation time of a single-mode laser driven by two coloured noises with coloured cross-correlation with bias signal modulation

The intensity correlation time T is studied by employing a gain-noise model of a single-mode laser driven by coloured pump noise T, and coloured quantum noise 72 with coloured cross-correlation tau(3) with a bias signal modulation. By using the linear approximation method, we detect that a maximum (i.e. resonance) exists in the curves of the intensity correlation time T versus the noise intensities D and Q when the noise correlation coefficient lambda is positive; and a minimum (i.e. suppression) exists in the T - D and T - Q curves when lambda is negative. When lambda is zero, T increases monotonously with increase of D and decreases monotonically with increase of Q. Furthermore, the curve of T versus the pump noise self-correlation time tau(1) is also studied. Our study shows that, no matter what the value of lambda is, there exist one maximum and one minimum in the T - tau(1) curve.