Effect on intensity correlation time by input signal in a single-mode laser with bias signal modulation

The effect on intensity correlation time T by input signal is studied for gain-noise model of a single-mode laser driven by colored pump noise and colored quantum noise with colored cross-correlation with a bias signal modulation in this paper. By using the linear approximation method, we detect that there exists maximum (i.e., resonance) in the curve of the intensity correlation time T upon bias-current in when the noise correlation coefficient A is positive; and there exists minimum (i.e., suppression) in the T-i(0) curve when lambda is negative. And when lambda is zero, T increases monotonously with increasing i(0). Furthermore, the curve of T upon the signal frequency Omega is also studied. Our study shows that no matter what the value of lambda is, there exists minimum (i.e., suppression) in the T-Omega curve.